Memory override #3

README.md

@@ -30,13 +30,34 @@ The Immediate Mode GUI paradigm may at first appear unusual to some users. This
 - [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
 - [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
 
+Frequently Asked Question
+-------------------------
+<b>How do you use ImGui on a platform that may not have a mouse and keyboard?</b>
+
+I recommend using [Synergy](http://synergy-project.org) and the uSynergy.c micro client to share your mouse and keyboard. This way you can seemingly use your PC input devices on a video game console or a tablet. ImGui was also designed to function with touch inputs if you increase the padding of widgets to compensate for the lack of precision of touch devices, but it is recommended you use a mouse to allow optimising for screen real-estate.
+
+<b>I integrated ImGui in my engine and the text or lines are blurry..</b>
+
+- Try adjusting ImGui::GetIO().PixelCenterOffset to 0.0f or 0.5f.
+- In your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f).
+
+<b>Can you create elaborate/serious tools with ImGui?</b>
+
+Yes. I have written data browsers, debuggers, profilers and all sort of non-trivial tools with the library. There's no reason you cannot, and in my experience the simplicity of the API is very empowering. However note that ImGui is programmer centric and the immediate-mode GUI paradigm might requires a bit of adaptation before you can realize its full potential. 
+
+<b>Can you reskin the look of ImGui?</b>
+
+Yes, you can alter the look of the interface to some degree: changing colors, sizes and padding, font. However, as ImGui is designed and optimised to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. The example below uses modified settings to create a more compact UI with different colors:
+
+![skinning screenshot 1](/web/skinning_sample_01.png?raw=true)
+
 
 Credits
 -------
 
 Developed by [Omar Cornut](http://www.miracleworld.net). The library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
 
-Embeds [proggy_clean](http://www.proggyfonts.net/) font by Tristan Grimmer (also MIT license).
+Embeds [proggy_clean](http://upperbounds.net) font by Tristan Grimmer (also MIT license).
 
 Inspiration, feedback, and testing: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. Thanks!
 

examples/directx9_example/main.cpp

@@ -5,98 +5,101 @@
 #include <dinput.h>
 #include "../../imgui.h"
 
-#pragma warning (disable: 4996)		// 'This function or variable may be unsafe': strdup
+#pragma warning (disable: 4996)     // 'This function or variable may be unsafe': strdup
 
 static HWND hWnd;
-static LPDIRECT3D9             g_pD3D = NULL;		// Used to create the D3DDevice
+static LPDIRECT3D9             g_pD3D = NULL;       // Used to create the D3DDevice
 static LPDIRECT3DDEVICE9       g_pd3dDevice = NULL; // Our rendering device
-static LPDIRECT3DVERTEXBUFFER9 g_pVB = NULL;		// Buffer to hold vertices
+static LPDIRECT3DVERTEXBUFFER9 g_pVB = NULL;        // Buffer to hold vertices
-static LPDIRECT3DTEXTURE9      g_pTexture = NULL;	// Our texture
+static LPDIRECT3DTEXTURE9      g_pTexture = NULL;   // Our texture
 struct CUSTOMVERTEX
 {
-    D3DXVECTOR3	position;
+    D3DXVECTOR3 position;
-    D3DCOLOR	color;
+    D3DCOLOR    color;
-    float		tu, tv;
+    float       tu, tv;
 };
 #define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ|D3DFVF_DIFFUSE|D3DFVF_TEX1)
 
-// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structuer)
+// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
+// If text or lines are blurry when integrating ImGui in your engine:
+// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
+// - try adjusting ImGui::GetIO().PixelCenterOffset to 0.5f or 0.375f
 static void ImImpl_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_count)
 {
-	size_t total_vtx_count = 0;
+    size_t total_vtx_count = 0;
-	for (int n = 0; n < cmd_lists_count; n++)
+    for (int n = 0; n < cmd_lists_count; n++)
-		total_vtx_count += cmd_lists[n]->vtx_buffer.size();
+        total_vtx_count += cmd_lists[n]->vtx_buffer.size();
-	if (total_vtx_count == 0)
+    if (total_vtx_count == 0)
-		return;
+        return;
 
-	// Copy and convert all vertices into a single contiguous buffer
+    // Copy and convert all vertices into a single contiguous buffer
     CUSTOMVERTEX* vtx_dst;
     if (g_pVB->Lock(0, total_vtx_count, (void**)&vtx_dst, D3DLOCK_DISCARD) < 0)
         return;
-	for (int n = 0; n < cmd_lists_count; n++)
+    for (int n = 0; n < cmd_lists_count; n++)
-	{
+    {
-		const ImDrawList* cmd_list = cmd_lists[n];
+        const ImDrawList* cmd_list = cmd_lists[n];
-		const ImDrawVert* vtx_src = &cmd_list->vtx_buffer[0];
+        const ImDrawVert* vtx_src = &cmd_list->vtx_buffer[0];
-		for (size_t i = 0; i < cmd_list->vtx_buffer.size(); i++)
+        for (size_t i = 0; i < cmd_list->vtx_buffer.size(); i++)
-		{
+        {
-			vtx_dst->position.x = vtx_src->pos.x;
+            vtx_dst->position.x = vtx_src->pos.x;
-			vtx_dst->position.y = vtx_src->pos.y;
+            vtx_dst->position.y = vtx_src->pos.y;
-			vtx_dst->position.z = 0.0f;
+            vtx_dst->position.z = 0.0f;
-			vtx_dst->color = (vtx_src->col & 0xFF00FF00) | ((vtx_src->col & 0xFF0000)>>16) | ((vtx_src->col & 0xFF) << 16);		// RGBA --> ARGB for DirectX9
+            vtx_dst->color = (vtx_src->col & 0xFF00FF00) | ((vtx_src->col & 0xFF0000)>>16) | ((vtx_src->col & 0xFF) << 16);     // RGBA --> ARGB for DirectX9
-			vtx_dst->tu = vtx_src->uv.x;
+            vtx_dst->tu = vtx_src->uv.x;
-			vtx_dst->tv = vtx_src->uv.y;
+            vtx_dst->tv = vtx_src->uv.y;
-			vtx_dst++;
+            vtx_dst++;
-			vtx_src++;
+            vtx_src++;
-		}
+        }
-	}
+    }
     g_pVB->Unlock();
 
-	g_pd3dDevice->SetStreamSource( 0, g_pVB, 0, sizeof( CUSTOMVERTEX ) );
+    g_pd3dDevice->SetStreamSource( 0, g_pVB, 0, sizeof( CUSTOMVERTEX ) );
-	g_pd3dDevice->SetFVF( D3DFVF_CUSTOMVERTEX );
+    g_pd3dDevice->SetFVF( D3DFVF_CUSTOMVERTEX );
 
-	// Setup render state: alpha-blending, no face culling, no depth testing
+    // Setup render state: alpha-blending, no face culling, no depth testing
     g_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_NONE );
     g_pd3dDevice->SetRenderState( D3DRS_LIGHTING, false );
     g_pd3dDevice->SetRenderState( D3DRS_ZENABLE, false );
-	g_pd3dDevice->SetRenderState( D3DRS_ALPHABLENDENABLE, true );
+    g_pd3dDevice->SetRenderState( D3DRS_ALPHABLENDENABLE, true );
-	g_pd3dDevice->SetRenderState( D3DRS_BLENDOP, D3DBLENDOP_ADD );
+    g_pd3dDevice->SetRenderState( D3DRS_BLENDOP, D3DBLENDOP_ADD );
-	g_pd3dDevice->SetRenderState( D3DRS_ALPHATESTENABLE, false );
+    g_pd3dDevice->SetRenderState( D3DRS_ALPHATESTENABLE, false );
-	g_pd3dDevice->SetRenderState( D3DRS_SRCBLEND, D3DBLEND_SRCALPHA );
+    g_pd3dDevice->SetRenderState( D3DRS_SRCBLEND, D3DBLEND_SRCALPHA );
-	g_pd3dDevice->SetRenderState( D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA );
+    g_pd3dDevice->SetRenderState( D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA );
-	g_pd3dDevice->SetRenderState( D3DRS_SCISSORTESTENABLE, true );
+    g_pd3dDevice->SetRenderState( D3DRS_SCISSORTESTENABLE, true );
 
-	// Setup texture
+    // Setup texture
-	g_pd3dDevice->SetTexture( 0, g_pTexture );
+    g_pd3dDevice->SetTexture( 0, g_pTexture );
-	g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_MODULATE );
+    g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_MODULATE );
-	g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE );
+    g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE );
-	g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE );
+    g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE );
-	g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP, D3DTOP_MODULATE );
+    g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP, D3DTOP_MODULATE );
-	g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
+    g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
-	g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE );
+    g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE );
 
-	// Setup orthographic projection matrix
+    // Setup orthographic projection matrix
-	D3DXMATRIXA16 mat;
+    D3DXMATRIXA16 mat;
-	D3DXMatrixIdentity(&mat);
+    D3DXMatrixIdentity(&mat);
-	g_pd3dDevice->SetTransform(D3DTS_WORLD, &mat);
+    g_pd3dDevice->SetTransform(D3DTS_WORLD, &mat);
-	g_pd3dDevice->SetTransform(D3DTS_VIEW, &mat);
+    g_pd3dDevice->SetTransform(D3DTS_VIEW, &mat);
-	D3DXMatrixOrthoOffCenterLH(&mat, 0.0f, ImGui::GetIO().DisplaySize.x, ImGui::GetIO().DisplaySize.y, 0.0f, -1.0f, +1.0f);
+    D3DXMatrixOrthoOffCenterLH(&mat, 0.5f, ImGui::GetIO().DisplaySize.x+0.5f, ImGui::GetIO().DisplaySize.y+0.5f, 0.5f, -1.0f, +1.0f);
-	g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &mat);
+    g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &mat);
 
-	// Render command lists
+    // Render command lists
-	int vtx_offset = 0;
+    int vtx_offset = 0;
-	for (int n = 0; n < cmd_lists_count; n++)
+    for (int n = 0; n < cmd_lists_count; n++)
-	{
+    {
-		// Render command list
+        // Render command list
-		const ImDrawList* cmd_list = cmd_lists[n];
+        const ImDrawList* cmd_list = cmd_lists[n];
-		const ImDrawCmd* pcmd_end = cmd_list->commands.end();
+        const ImDrawCmd* pcmd_end = cmd_list->commands.end();
-		for (const ImDrawCmd* pcmd = cmd_list->commands.begin(); pcmd != pcmd_end; pcmd++)
+        for (const ImDrawCmd* pcmd = cmd_list->commands.begin(); pcmd != pcmd_end; pcmd++)
-		{
+        {
-			const RECT r = { (LONG)pcmd->clip_rect.x, (LONG)pcmd->clip_rect.y, (LONG)pcmd->clip_rect.z, (LONG)pcmd->clip_rect.w };
+            const RECT r = { (LONG)pcmd->clip_rect.x, (LONG)pcmd->clip_rect.y, (LONG)pcmd->clip_rect.z, (LONG)pcmd->clip_rect.w };
-			g_pd3dDevice->SetScissorRect(&r);
+            g_pd3dDevice->SetScissorRect(&r);
-			g_pd3dDevice->DrawPrimitive(D3DPT_TRIANGLELIST, vtx_offset, pcmd->vtx_count/3);
+            g_pd3dDevice->DrawPrimitive(D3DPT_TRIANGLELIST, vtx_offset, pcmd->vtx_count/3);
-			vtx_offset += pcmd->vtx_count;
+            vtx_offset += pcmd->vtx_count;
-		}
+        }
-	}
+    }
 }
 
 HRESULT InitD3D(HWND hWnd)
@@ -111,7 +114,7 @@ HRESULT InitD3D(HWND hWnd)
     d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;
     d3dpp.EnableAutoDepthStencil = TRUE;
     d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
-	d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
+    d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
 
     // Create the D3DDevice
     if (g_pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_HARDWARE_VERTEXPROCESSING, &d3dpp, &g_pd3dDevice) < 0)
@@ -134,90 +137,90 @@ void Cleanup()
 
 LRESULT WINAPI MsgProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
 {
-	ImGuiIO& io = ImGui::GetIO();
+    ImGuiIO& io = ImGui::GetIO();
-	switch (msg)
+    switch (msg)
-	{
+    {
-	case WM_LBUTTONDOWN:
+    case WM_LBUTTONDOWN:
-		io.MouseDown[0] = true;
+        io.MouseDown[0] = true;
-		return true;
+        return true;
-	case WM_LBUTTONUP:
+    case WM_LBUTTONUP:
-		io.MouseDown[0] = false; 
+        io.MouseDown[0] = false; 
-		return true;
+        return true;
-	case WM_RBUTTONDOWN:
+    case WM_RBUTTONDOWN:
-		io.MouseDown[1] = true; 
+        io.MouseDown[1] = true; 
-		return true;
+        return true;
-	case WM_RBUTTONUP:
+    case WM_RBUTTONUP:
-		io.MouseDown[1] = false; 
+        io.MouseDown[1] = false; 
-		return true;
+        return true;
-	case WM_MOUSEWHEEL:
+    case WM_MOUSEWHEEL:
-		// Mouse wheel: -1,0,+1
+        // Mouse wheel: -1,0,+1
-		io.MouseWheel = GET_WHEEL_DELTA_WPARAM(wParam) > 0 ? +1 : -1;
+        io.MouseWheel = GET_WHEEL_DELTA_WPARAM(wParam) > 0 ? +1 : -1;
-		return true;
+        return true;
-	case WM_MOUSEMOVE:
+    case WM_MOUSEMOVE:
-		// Mouse position, in pixels (set to -1,-1 if no mouse / on another screen, etc.)
+        // Mouse position, in pixels (set to -1,-1 if no mouse / on another screen, etc.)
-		io.MousePos.x = (signed short)(lParam);
+        io.MousePos.x = (signed short)(lParam);
-		io.MousePos.y = (signed short)(lParam >> 16); 
+        io.MousePos.y = (signed short)(lParam >> 16); 
-		return true;
+        return true;
-	case WM_CHAR:
+    case WM_CHAR:
-		// You can also use ToAscii()+GetKeyboardState() to retrieve characters.
+        // You can also use ToAscii()+GetKeyboardState() to retrieve characters.
-		if (wParam > 1 && wParam < 256)
+        if (wParam > 1 && wParam < 256)
-			io.AddInputCharacter((char)wParam);
+            io.AddInputCharacter((char)wParam);
-		return true;
+        return true;
-	case WM_DESTROY:
+    case WM_DESTROY:
-		{
+        {
-			Cleanup();
+            Cleanup();
-			PostQuitMessage(0);
+            PostQuitMessage(0);
-			return 0;
+            return 0;
-		}
+        }
-	}
+    }
     return DefWindowProc(hWnd, msg, wParam, lParam);
 }
 
 void InitImGui()
 {
-	RECT rect;
+    RECT rect;
-	GetClientRect(hWnd, &rect);
+    GetClientRect(hWnd, &rect);
 
-	ImGuiIO& io = ImGui::GetIO();
+    ImGuiIO& io = ImGui::GetIO();
-	io.DisplaySize = ImVec2((float)(rect.right - rect.left), (float)(rect.bottom - rect.top));	// Display size, in pixels. For clamping windows positions.
+    io.DisplaySize = ImVec2((float)(rect.right - rect.left), (float)(rect.bottom - rect.top));  // Display size, in pixels. For clamping windows positions.
-	io.DeltaTime = 1.0f/60.0f;																	// Time elapsed since last frame, in seconds (in this sample app we'll override this every frame because our timestep is variable)
+    io.DeltaTime = 1.0f/60.0f;                                                                  // Time elapsed since last frame, in seconds (in this sample app we'll override this every frame because our timestep is variable)
-	io.PixelCenterOffset = 0.0f;																// Align Direct3D Texels
+    io.PixelCenterOffset = 0.0f;                                                                // Align Direct3D Texels
-	io.KeyMap[ImGuiKey_Tab] = VK_TAB;															// Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array that we will update during the application lifetime.
+    io.KeyMap[ImGuiKey_Tab] = VK_TAB;                                                           // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array that we will update during the application lifetime.
-	io.KeyMap[ImGuiKey_LeftArrow] = VK_LEFT;
+    io.KeyMap[ImGuiKey_LeftArrow] = VK_LEFT;
-	io.KeyMap[ImGuiKey_RightArrow] = VK_RIGHT;
+    io.KeyMap[ImGuiKey_RightArrow] = VK_RIGHT;
-	io.KeyMap[ImGuiKey_UpArrow] = VK_UP;
+    io.KeyMap[ImGuiKey_UpArrow] = VK_UP;
-	io.KeyMap[ImGuiKey_DownArrow] = VK_UP;
+    io.KeyMap[ImGuiKey_DownArrow] = VK_UP;
-	io.KeyMap[ImGuiKey_Home] = VK_HOME;
+    io.KeyMap[ImGuiKey_Home] = VK_HOME;
-	io.KeyMap[ImGuiKey_End] = VK_END;
+    io.KeyMap[ImGuiKey_End] = VK_END;
-	io.KeyMap[ImGuiKey_Delete] = VK_DELETE;
+    io.KeyMap[ImGuiKey_Delete] = VK_DELETE;
-	io.KeyMap[ImGuiKey_Backspace] = VK_BACK;
+    io.KeyMap[ImGuiKey_Backspace] = VK_BACK;
-	io.KeyMap[ImGuiKey_Enter] = VK_RETURN;
+    io.KeyMap[ImGuiKey_Enter] = VK_RETURN;
-	io.KeyMap[ImGuiKey_Escape] = VK_ESCAPE;
+    io.KeyMap[ImGuiKey_Escape] = VK_ESCAPE;
-	io.KeyMap[ImGuiKey_A] = 'A';
+    io.KeyMap[ImGuiKey_A] = 'A';
-	io.KeyMap[ImGuiKey_C] = 'C';
+    io.KeyMap[ImGuiKey_C] = 'C';
-	io.KeyMap[ImGuiKey_V] = 'V';
+    io.KeyMap[ImGuiKey_V] = 'V';
-	io.KeyMap[ImGuiKey_X] = 'X';
+    io.KeyMap[ImGuiKey_X] = 'X';
-	io.KeyMap[ImGuiKey_Y] = 'Y';
+    io.KeyMap[ImGuiKey_Y] = 'Y';
-	io.KeyMap[ImGuiKey_Z] = 'Z';
+    io.KeyMap[ImGuiKey_Z] = 'Z';
 
-	io.RenderDrawListsFn = ImImpl_RenderDrawLists;
+    io.RenderDrawListsFn = ImImpl_RenderDrawLists;
-	
+    
-	// Create the vertex buffer
+    // Create the vertex buffer
-	if (g_pd3dDevice->CreateVertexBuffer(10000 * sizeof(CUSTOMVERTEX), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_pVB, NULL) < 0)
+    if (g_pd3dDevice->CreateVertexBuffer(10000 * sizeof(CUSTOMVERTEX), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_pVB, NULL) < 0)
-	{
+    {
-		IM_ASSERT(0);
+        IM_ASSERT(0);
-		return;
+        return;
-	}
+    }
 
-	// Load font texture
+    // Load font texture
-	const void* png_data;
+    const void* png_data;
-	unsigned int png_size;
+    unsigned int png_size;
-	ImGui::GetDefaultFontData(NULL, NULL, &png_data, &png_size);
+    ImGui::GetDefaultFontData(NULL, NULL, &png_data, &png_size);
-	if (D3DXCreateTextureFromFileInMemory(g_pd3dDevice, png_data, png_size, &g_pTexture) < 0)
+    if (D3DXCreateTextureFromFileInMemory(g_pd3dDevice, png_data, png_size, &g_pTexture) < 0)
-	{
+    {
-		IM_ASSERT(0);
+        IM_ASSERT(0);
-		return;
+        return;
-	}
+    }
 }
 
 INT64 ticks_per_second = 0;
@@ -225,28 +228,28 @@ INT64 time = 0;
 
 void UpdateImGui()
 {
-	ImGuiIO& io = ImGui::GetIO();
+    ImGuiIO& io = ImGui::GetIO();
 
-	// Setup timestep
+    // Setup timestep
-	INT64 current_time;
+    INT64 current_time;
-	QueryPerformanceCounter((LARGE_INTEGER *)&current_time); 
+    QueryPerformanceCounter((LARGE_INTEGER *)&current_time); 
-	io.DeltaTime = (float)(current_time - time) / ticks_per_second;
+    io.DeltaTime = (float)(current_time - time) / ticks_per_second;
-	time = current_time;
+    time = current_time;
 
-	// Setup inputs
+    // Setup inputs
-	// (we already got mouse position, buttons, wheel from the window message callback)
+    // (we already got mouse position, buttons, wheel from the window message callback)
-	BYTE keystate[256];
+    BYTE keystate[256];
-	GetKeyboardState(keystate);
+    GetKeyboardState(keystate);
-	for (int i = 0; i < 256; i++)
+    for (int i = 0; i < 256; i++)
-		io.KeysDown[i] = (keystate[i] & 0x80) != 0;
+        io.KeysDown[i] = (keystate[i] & 0x80) != 0;
-	io.KeyCtrl = (keystate[VK_CONTROL] & 0x80) != 0;
+    io.KeyCtrl = (keystate[VK_CONTROL] & 0x80) != 0;
-	io.KeyShift = (keystate[VK_SHIFT] & 0x80) != 0;
+    io.KeyShift = (keystate[VK_SHIFT] & 0x80) != 0;
-	// io.MousePos : filled by WM_MOUSEMOVE event
+    // io.MousePos : filled by WM_MOUSEMOVE event
-	// io.MouseDown : filled by WM_*BUTTON* events
+    // io.MouseDown : filled by WM_*BUTTON* events
-	// io.MouseWheel : filled by WM_MOUSEWHEEL events
+    // io.MouseWheel : filled by WM_MOUSEWHEEL events
 
-	// Start the frame
+    // Start the frame
-	ImGui::NewFrame();
+    ImGui::NewFrame();
 }
 
 int WINAPI wWinMain(HINSTANCE hInst, HINSTANCE, LPWSTR, int)
@@ -258,25 +261,25 @@ int WINAPI wWinMain(HINSTANCE hInst, HINSTANCE, LPWSTR, int)
     // Create the application's window
     hWnd = CreateWindow(L"ImGui Example", L"ImGui DirectX9 Example", WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
 
-	if (!QueryPerformanceFrequency((LARGE_INTEGER *)&ticks_per_second))
+    if (!QueryPerformanceFrequency((LARGE_INTEGER *)&ticks_per_second))
-		return 1;
+        return 1;
-	if (!QueryPerformanceCounter((LARGE_INTEGER *)&time))
+    if (!QueryPerformanceCounter((LARGE_INTEGER *)&time))
-		return 1;
+        return 1;
 
-	// Initialize Direct3D
+    // Initialize Direct3D
     if (InitD3D(hWnd) < 0)
-	{
+    {
-		if (g_pVB)
+        if (g_pVB)
-			g_pVB->Release();
+            g_pVB->Release();
-	    UnregisterClass(L"ImGui Example", wc.hInstance);
+        UnregisterClass(L"ImGui Example", wc.hInstance);
-		return 1;
+        return 1;
-	}
+    }
 
-	// Show the window
+    // Show the window
-	ShowWindow(hWnd, SW_SHOWDEFAULT);
+    ShowWindow(hWnd, SW_SHOWDEFAULT);
-	UpdateWindow(hWnd);
+    UpdateWindow(hWnd);
 
-	InitImGui();
+    InitImGui();
 
     // Enter the message loop
     MSG msg;
@@ -287,65 +290,65 @@ int WINAPI wWinMain(HINSTANCE hInst, HINSTANCE, LPWSTR, int)
         {
             TranslateMessage(&msg);
             DispatchMessage(&msg);
-			continue;
+            continue;
         }
-		
+        
-		UpdateImGui();
+        UpdateImGui();
 
-		// Create a simple window
+        // Create a simple window
-		// Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug"
+        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug"
-		static bool show_test_window = true;
+        static bool show_test_window = true;
-		static bool show_another_window = false;
+        static bool show_another_window = false;
-		static float f;
+        static float f;
-		ImGui::Text("Hello, world!");
+        ImGui::Text("Hello, world!");
-		ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-		show_test_window ^= ImGui::Button("Test Window");
+        show_test_window ^= ImGui::Button("Test Window");
-		show_another_window ^= ImGui::Button("Another Window");
+        show_another_window ^= ImGui::Button("Another Window");
 
-		// Calculate and show framerate
+        // Calculate and show framerate
-		static float ms_per_frame[120] = { 0 };
+        static float ms_per_frame[120] = { 0 };
-		static int ms_per_frame_idx = 0;
+        static int ms_per_frame_idx = 0;
-		static float ms_per_frame_accum = 0.0f;
+        static float ms_per_frame_accum = 0.0f;
-		ms_per_frame_accum -= ms_per_frame[ms_per_frame_idx];
+        ms_per_frame_accum -= ms_per_frame[ms_per_frame_idx];
-		ms_per_frame[ms_per_frame_idx] = ImGui::GetIO().DeltaTime * 1000.0f;
+        ms_per_frame[ms_per_frame_idx] = ImGui::GetIO().DeltaTime * 1000.0f;
-		ms_per_frame_accum += ms_per_frame[ms_per_frame_idx];
+        ms_per_frame_accum += ms_per_frame[ms_per_frame_idx];
-		ms_per_frame_idx = (ms_per_frame_idx + 1) % 120;
+        ms_per_frame_idx = (ms_per_frame_idx + 1) % 120;
-		const float ms_per_frame_avg = ms_per_frame_accum / 120;
+        const float ms_per_frame_avg = ms_per_frame_accum / 120;
-		ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", ms_per_frame_avg, 1000.0f / ms_per_frame_avg);
+        ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", ms_per_frame_avg, 1000.0f / ms_per_frame_avg);
 
-		// Show the ImGui test window
+        // Show the ImGui test window
-		// Most of user example code is in ImGui::ShowTestWindow()
+        // Most of user example code is in ImGui::ShowTestWindow()
-		if (show_test_window)
+        if (show_test_window)
-		{
+        {
-			ImGui::SetNewWindowDefaultPos(ImVec2(650, 20));		// Normally user code doesn't need/want to call it because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
+            ImGui::SetNewWindowDefaultPos(ImVec2(650, 20));     // Normally user code doesn't need/want to call it because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
-			ImGui::ShowTestWindow(&show_test_window);
+            ImGui::ShowTestWindow(&show_test_window);
-		}
+        }
 
-		// Show another simple window
+        // Show another simple window
-		if (show_another_window)
+        if (show_another_window)
-		{
+        {
-			ImGui::Begin("Another Window", &show_another_window, ImVec2(200,100));
+            ImGui::Begin("Another Window", &show_another_window, ImVec2(200,100));
-			ImGui::Text("Hello");
+            ImGui::Text("Hello");
-			ImGui::End();
+            ImGui::End();
-		}
+        }
 
-		// Rendering
+        // Rendering
-		g_pd3dDevice->SetRenderState(D3DRS_ZENABLE, false);
+        g_pd3dDevice->SetRenderState(D3DRS_ZENABLE, false);
-		g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, false);
+        g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, false);
-		g_pd3dDevice->SetRenderState(D3DRS_SCISSORTESTENABLE, false);
+        g_pd3dDevice->SetRenderState(D3DRS_SCISSORTESTENABLE, false);
-		g_pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_XRGB(204, 153, 153), 1.0f, 0);
+        g_pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_XRGB(204, 153, 153), 1.0f, 0);
-		if (g_pd3dDevice->BeginScene() >= 0)
+        if (g_pd3dDevice->BeginScene() >= 0)
-		{
+        {
-			ImGui::Render();
+            ImGui::Render();
-			g_pd3dDevice->EndScene();
+            g_pd3dDevice->EndScene();
-		}
+        }
-		g_pd3dDevice->Present(NULL, NULL, NULL, NULL);
+        g_pd3dDevice->Present(NULL, NULL, NULL, NULL);
-	}
+    }
 
-	ImGui::Shutdown();
+    ImGui::Shutdown();
 
-	if (g_pVB)
+    if (g_pVB)
-		g_pVB->Release();
+        g_pVB->Release();
 
     UnregisterClass(L"ImGui Example", wc.hInstance);
     return 0;

examples/opengl_example/main.cpp

@@ -2,267 +2,273 @@
 #include <GL/glew.h>
 #include <GLFW/glfw3.h>
 #define STB_IMAGE_IMPLEMENTATION
-#include "stb_image.h"					// for .png loading
+#include "stb_image.h"                  // for .png loading
 #include "../../imgui.h"
 #ifdef _MSC_VER
-#pragma warning (disable: 4996)			// 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
+#pragma warning (disable: 4996)         // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
 #endif
 
 static GLFWwindow* window;
 static GLuint fontTex;
 
-// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structuer)
+// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
-// We are using the fixed pipeline. 
+// If text or lines are blurry when integrating ImGui in your engine:
-// A faster way would be to collate all vertices from all cmd_lists into a single vertex buffer
+// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
+// - try adjusting ImGui::GetIO().PixelCenterOffset to 0.5f or 0.375f
 static void ImImpl_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_count)
 {
-	if (cmd_lists_count == 0)
+    if (cmd_lists_count == 0)
-		return;
+        return;
 
-	// Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, vertex/texcoord/color pointers.
+    // We are using the OpenGL fixed pipeline to make the example code simpler to read!
-	glEnable(GL_BLEND);
+    // A probable faster way to render would be to collate all vertices from all cmd_lists into a single vertex buffer.
-	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, vertex/texcoord/color pointers.
-	glDisable(GL_CULL_FACE);
+    glEnable(GL_BLEND);
-	glDisable(GL_DEPTH_TEST);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-	glEnable(GL_SCISSOR_TEST);
+    glDisable(GL_CULL_FACE);
-	glEnableClientState(GL_VERTEX_ARRAY);
+    glDisable(GL_DEPTH_TEST);
-	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+    glEnable(GL_SCISSOR_TEST);
-	glEnableClientState(GL_COLOR_ARRAY);
+    glEnableClientState(GL_VERTEX_ARRAY);
+    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+    glEnableClientState(GL_COLOR_ARRAY);
 
-	// Setup texture
+    // Setup texture
-	glBindTexture(GL_TEXTURE_2D, fontTex);
+    glBindTexture(GL_TEXTURE_2D, fontTex);
-	glEnable(GL_TEXTURE_2D);
+    glEnable(GL_TEXTURE_2D);
 
-	// Setup orthographic projection matrix
+    // Setup orthographic projection matrix
-	const float width = ImGui::GetIO().DisplaySize.x;
+    const float width = ImGui::GetIO().DisplaySize.x;
-	const float height = ImGui::GetIO().DisplaySize.y;
+    const float height = ImGui::GetIO().DisplaySize.y;
-	glMatrixMode(GL_PROJECTION);
+    glMatrixMode(GL_PROJECTION);
-	glLoadIdentity();
+    glLoadIdentity();
-	glOrtho(0.0f, width, height, 0.0f, -1.0f, +1.0f);
+    glOrtho(0.0f, width, height, 0.0f, -1.0f, +1.0f);
-	glMatrixMode(GL_MODELVIEW);
+    glMatrixMode(GL_MODELVIEW);
-	glLoadIdentity();
+    glLoadIdentity();
 
-	// Render command lists
+    // Render command lists
-	for (int n = 0; n < cmd_lists_count; n++)
+    for (int n = 0; n < cmd_lists_count; n++)
-	{
+    {
-		const ImDrawList* cmd_list = cmd_lists[n];
+        const ImDrawList* cmd_list = cmd_lists[n];
-		const unsigned char* vtx_buffer = (const unsigned char*)cmd_list->vtx_buffer.begin();
+        const unsigned char* vtx_buffer = (const unsigned char*)cmd_list->vtx_buffer.begin();
-		glVertexPointer(2, GL_FLOAT, sizeof(ImDrawVert), (void*)(vtx_buffer));
+        glVertexPointer(2, GL_FLOAT, sizeof(ImDrawVert), (void*)(vtx_buffer));
-		glTexCoordPointer(2, GL_FLOAT, sizeof(ImDrawVert), (void*)(vtx_buffer+8));
+        glTexCoordPointer(2, GL_FLOAT, sizeof(ImDrawVert), (void*)(vtx_buffer+8));
-		glColorPointer(4, GL_UNSIGNED_BYTE, sizeof(ImDrawVert), (void*)(vtx_buffer+16));
+        glColorPointer(4, GL_UNSIGNED_BYTE, sizeof(ImDrawVert), (void*)(vtx_buffer+16));
 
-		int vtx_offset = 0;
+        int vtx_offset = 0;
-		const ImDrawCmd* pcmd_end = cmd_list->commands.end();
+        const ImDrawCmd* pcmd_end = cmd_list->commands.end();
-		for (const ImDrawCmd* pcmd = cmd_list->commands.begin(); pcmd != pcmd_end; pcmd++)
+        for (const ImDrawCmd* pcmd = cmd_list->commands.begin(); pcmd != pcmd_end; pcmd++)
-		{
+        {
-			glScissor((int)pcmd->clip_rect.x, (int)(height - pcmd->clip_rect.w), (int)(pcmd->clip_rect.z - pcmd->clip_rect.x), (int)(pcmd->clip_rect.w - pcmd->clip_rect.y));
+            glScissor((int)pcmd->clip_rect.x, (int)(height - pcmd->clip_rect.w), (int)(pcmd->clip_rect.z - pcmd->clip_rect.x), (int)(pcmd->clip_rect.w - pcmd->clip_rect.y));
-			glDrawArrays(GL_TRIANGLES, vtx_offset, pcmd->vtx_count);
+            glDrawArrays(GL_TRIANGLES, vtx_offset, pcmd->vtx_count);
-			vtx_offset += pcmd->vtx_count;
+            vtx_offset += pcmd->vtx_count;
-		}
+        }
-	}
+    }
-	glDisable(GL_SCISSOR_TEST);
+    glDisable(GL_SCISSOR_TEST);
+    glDisableClientState(GL_COLOR_ARRAY);
+    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+    glDisableClientState(GL_VERTEX_ARRAY);
 }
 
 static const char* ImImpl_GetClipboardTextFn()
 {
-	return glfwGetClipboardString(window);
+    return glfwGetClipboardString(window);
 }
 
 static void ImImpl_SetClipboardTextFn(const char* text, const char* text_end)
 {
-	if (!text_end)
+    if (!text_end)
-		text_end = text + strlen(text);
+        text_end = text + strlen(text);
 
-	if (*text_end == 0)
+    if (*text_end == 0)
-	{
+    {
-		// Already got a zero-terminator at 'text_end', we don't need to add one
+        // Already got a zero-terminator at 'text_end', we don't need to add one
-		glfwSetClipboardString(window, text);
+        glfwSetClipboardString(window, text);
-	}
+    }
-	else
+    else
-	{
+    {
-		// Add a zero-terminator because glfw function doesn't take a size
+        // Add a zero-terminator because glfw function doesn't take a size
-		char* buf = (char*)malloc(text_end - text + 1);
+        char* buf = (char*)malloc(text_end - text + 1);
-		memcpy(buf, text, text_end-text);
+        memcpy(buf, text, text_end-text);
-		buf[text_end-text] = '\0';
+        buf[text_end-text] = '\0';
-		glfwSetClipboardString(window, buf);
+        glfwSetClipboardString(window, buf);
-		free(buf);
+        free(buf);
-	}
+    }
 }
 
 
 // GLFW callbacks to get events
 static void glfw_error_callback(int error, const char* description)
 {
-	fputs(description, stderr);
+    fputs(description, stderr);
 }
 
 static void glfw_scroll_callback(GLFWwindow* window, double xoffset, double yoffset)
 {
-	ImGuiIO& io = ImGui::GetIO();
+    ImGuiIO& io = ImGui::GetIO();
-	io.MouseWheel = (yoffset != 0.0f) ? yoffset > 0.0f ? 1 : - 1 : 0;			// Mouse wheel: -1,0,+1
+    io.MouseWheel = (yoffset != 0.0f) ? yoffset > 0.0f ? 1 : - 1 : 0;           // Mouse wheel: -1,0,+1
 }
 
 static void glfw_key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
 {
-	ImGuiIO& io = ImGui::GetIO();
+    ImGuiIO& io = ImGui::GetIO();
-	if (action == GLFW_PRESS)
+    if (action == GLFW_PRESS)
-		io.KeysDown[key] = true;
+        io.KeysDown[key] = true;
-	if (action == GLFW_RELEASE)
+    if (action == GLFW_RELEASE)
-		io.KeysDown[key] = false;
+        io.KeysDown[key] = false;
-	io.KeyCtrl = (mods & GLFW_MOD_CONTROL) != 0;
+    io.KeyCtrl = (mods & GLFW_MOD_CONTROL) != 0;
-	io.KeyShift = (mods & GLFW_MOD_SHIFT) != 0;
+    io.KeyShift = (mods & GLFW_MOD_SHIFT) != 0;
 }
 
 static void glfw_char_callback(GLFWwindow* window, unsigned int c)
 {
-	if (c > 0 && c <= 255)
+    if (c > 0 && c <= 255)
-		ImGui::GetIO().AddInputCharacter((char)c);
+        ImGui::GetIO().AddInputCharacter((char)c);
 }
 
 // OpenGL code based on http://open.gl tutorials
 void InitGL()
 {
-	glfwSetErrorCallback(glfw_error_callback);
+    glfwSetErrorCallback(glfw_error_callback);
 
-	if (!glfwInit())
+    if (!glfwInit())
-		exit(1);
+        exit(1);
 
-	glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
+    glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
-	window = glfwCreateWindow(1280, 720, "ImGui OpenGL example", NULL, NULL);
+    window = glfwCreateWindow(1280, 720, "ImGui OpenGL example", NULL, NULL);
-	glfwMakeContextCurrent(window);
+    glfwMakeContextCurrent(window);
-	glfwSetKeyCallback(window, glfw_key_callback);
+    glfwSetKeyCallback(window, glfw_key_callback);
-	glfwSetScrollCallback(window, glfw_scroll_callback);
+    glfwSetScrollCallback(window, glfw_scroll_callback);
-	glfwSetCharCallback(window, glfw_char_callback);
+    glfwSetCharCallback(window, glfw_char_callback);
 
-	glewInit();
+    glewInit();
 }
 
 void InitImGui()
 {
-	int w, h;
+    int w, h;
-	glfwGetWindowSize(window, &w, &h);
+    glfwGetWindowSize(window, &w, &h);
 
-	ImGuiIO& io = ImGui::GetIO();
+    ImGuiIO& io = ImGui::GetIO();
-	io.DisplaySize = ImVec2((float)w, (float)h);            // Display size, in pixels. For clamping windows positions.
+    io.DisplaySize = ImVec2((float)w, (float)h);        // Display size, in pixels. For clamping windows positions.
-	io.DeltaTime = 1.0f/60.0f;                                // Time elapsed since last frame, in seconds (in this sample app we'll override this every frame because our timestep is variable)
+    io.DeltaTime = 1.0f/60.0f;                          // Time elapsed since last frame, in seconds (in this sample app we'll override this every frame because our timestep is variable)
-	io.PixelCenterOffset = 0.5f;                            // Align OpenGL texels
+    io.PixelCenterOffset = 0.0f;                        // Align OpenGL texels
-	io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB;                    // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+    io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB;             // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
-	io.KeyMap[ImGuiKey_LeftArrow] = GLFW_KEY_LEFT;
+    io.KeyMap[ImGuiKey_LeftArrow] = GLFW_KEY_LEFT;
-	io.KeyMap[ImGuiKey_RightArrow] = GLFW_KEY_RIGHT;
+    io.KeyMap[ImGuiKey_RightArrow] = GLFW_KEY_RIGHT;
-	io.KeyMap[ImGuiKey_UpArrow] = GLFW_KEY_UP;
+    io.KeyMap[ImGuiKey_UpArrow] = GLFW_KEY_UP;
-	io.KeyMap[ImGuiKey_DownArrow] = GLFW_KEY_DOWN;
+    io.KeyMap[ImGuiKey_DownArrow] = GLFW_KEY_DOWN;
-	io.KeyMap[ImGuiKey_Home] = GLFW_KEY_HOME;
+    io.KeyMap[ImGuiKey_Home] = GLFW_KEY_HOME;
-	io.KeyMap[ImGuiKey_End] = GLFW_KEY_END;
+    io.KeyMap[ImGuiKey_End] = GLFW_KEY_END;
-	io.KeyMap[ImGuiKey_Delete] = GLFW_KEY_DELETE;
+    io.KeyMap[ImGuiKey_Delete] = GLFW_KEY_DELETE;
-	io.KeyMap[ImGuiKey_Backspace] = GLFW_KEY_BACKSPACE;
+    io.KeyMap[ImGuiKey_Backspace] = GLFW_KEY_BACKSPACE;
-	io.KeyMap[ImGuiKey_Enter] = GLFW_KEY_ENTER;
+    io.KeyMap[ImGuiKey_Enter] = GLFW_KEY_ENTER;
-	io.KeyMap[ImGuiKey_Escape] = GLFW_KEY_ESCAPE;
+    io.KeyMap[ImGuiKey_Escape] = GLFW_KEY_ESCAPE;
-	io.KeyMap[ImGuiKey_A] = GLFW_KEY_A;
+    io.KeyMap[ImGuiKey_A] = GLFW_KEY_A;
-	io.KeyMap[ImGuiKey_C] = GLFW_KEY_C;
+    io.KeyMap[ImGuiKey_C] = GLFW_KEY_C;
-	io.KeyMap[ImGuiKey_V] = GLFW_KEY_V;
+    io.KeyMap[ImGuiKey_V] = GLFW_KEY_V;
-	io.KeyMap[ImGuiKey_X] = GLFW_KEY_X;
+    io.KeyMap[ImGuiKey_X] = GLFW_KEY_X;
-	io.KeyMap[ImGuiKey_Y] = GLFW_KEY_Y;
+    io.KeyMap[ImGuiKey_Y] = GLFW_KEY_Y;
-	io.KeyMap[ImGuiKey_Z] = GLFW_KEY_Z;
+    io.KeyMap[ImGuiKey_Z] = GLFW_KEY_Z;
 
-	io.RenderDrawListsFn = ImImpl_RenderDrawLists;
+    io.RenderDrawListsFn = ImImpl_RenderDrawLists;
-	io.SetClipboardTextFn = ImImpl_SetClipboardTextFn;
+    io.SetClipboardTextFn = ImImpl_SetClipboardTextFn;
-	io.GetClipboardTextFn = ImImpl_GetClipboardTextFn;
+    io.GetClipboardTextFn = ImImpl_GetClipboardTextFn;
 
-	// Load font texture
+    // Load font texture
-	glGenTextures(1, &fontTex);
+    glGenTextures(1, &fontTex);
-	glBindTexture(GL_TEXTURE_2D, fontTex);
+    glBindTexture(GL_TEXTURE_2D, fontTex);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-	const void* png_data;
+    const void* png_data;
-	unsigned int png_size;
+    unsigned int png_size;
-	ImGui::GetDefaultFontData(NULL, NULL, &png_data, &png_size);
+    ImGui::GetDefaultFontData(NULL, NULL, &png_data, &png_size);
-	int tex_x, tex_y, tex_comp;
+    int tex_x, tex_y, tex_comp;
-	void* tex_data = stbi_load_from_memory((const unsigned char*)png_data, (int)png_size, &tex_x, &tex_y, &tex_comp, 0);
+    void* tex_data = stbi_load_from_memory((const unsigned char*)png_data, (int)png_size, &tex_x, &tex_y, &tex_comp, 0);
-	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tex_x, tex_y, 0, GL_RGBA, GL_UNSIGNED_BYTE, tex_data);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tex_x, tex_y, 0, GL_RGBA, GL_UNSIGNED_BYTE, tex_data);
-	stbi_image_free(tex_data);
+    stbi_image_free(tex_data);
 }
 
 void UpdateImGui()
 {
-	ImGuiIO& io = ImGui::GetIO();
+    ImGuiIO& io = ImGui::GetIO();
 
-	// Setup timestep
+    // Setup timestep
-	static double time = 0.0f;
+    static double time = 0.0f;
-	const double current_time =  glfwGetTime();
+    const double current_time =  glfwGetTime();
-	io.DeltaTime = (float)(current_time - time);
+    io.DeltaTime = (float)(current_time - time);
-	time = current_time;
+    time = current_time;
 
-	// Setup inputs
+    // Setup inputs
-	// (we already got mouse wheel, keyboard keys & characters from glfw callbacks polled in glfwPollEvents())
+    // (we already got mouse wheel, keyboard keys & characters from glfw callbacks polled in glfwPollEvents())
-	double mouse_x, mouse_y;
+    double mouse_x, mouse_y;
-	glfwGetCursorPos(window, &mouse_x, &mouse_y);
+    glfwGetCursorPos(window, &mouse_x, &mouse_y);
-	io.MousePos = ImVec2((float)mouse_x, (float)mouse_y);                           // Mouse position, in pixels (set to -1,-1 if no mouse / on another screen, etc.)
+    io.MousePos = ImVec2((float)mouse_x, (float)mouse_y);                           // Mouse position, in pixels (set to -1,-1 if no mouse / on another screen, etc.)
-	io.MouseDown[0] = glfwGetMouseButton(window, GLFW_MOUSE_BUTTON_LEFT) != 0;
+    io.MouseDown[0] = glfwGetMouseButton(window, GLFW_MOUSE_BUTTON_LEFT) != 0;
-	io.MouseDown[1] = glfwGetMouseButton(window, GLFW_MOUSE_BUTTON_RIGHT) != 0;
+    io.MouseDown[1] = glfwGetMouseButton(window, GLFW_MOUSE_BUTTON_RIGHT) != 0;
 
-	// Start the frame
+    // Start the frame
-	ImGui::NewFrame();
+    ImGui::NewFrame();
 }
 
 // Application code
 int main(int argc, char** argv)
 {
-	InitGL();
+    InitGL();
-	InitImGui();
+    InitImGui();
 
-	while (!glfwWindowShouldClose(window))
+    while (!glfwWindowShouldClose(window))
-	{
+    {
-		ImGuiIO& io = ImGui::GetIO();
+        ImGuiIO& io = ImGui::GetIO();
-		io.MouseWheel = 0;
+        io.MouseWheel = 0;
-		glfwPollEvents();
+        glfwPollEvents();
-		UpdateImGui();
+        UpdateImGui();
 
-		// Create a simple window
+        // Create a simple window
-		// Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug"
+        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug"
-		static bool show_test_window = true;
+        static bool show_test_window = true;
-		static bool show_another_window = false;
+        static bool show_another_window = false;
-		static float f;
+        static float f;
-		ImGui::Text("Hello, world!");
+        ImGui::Text("Hello, world!");
-		ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-		show_test_window ^= ImGui::Button("Test Window");
+        show_test_window ^= ImGui::Button("Test Window");
-		show_another_window ^= ImGui::Button("Another Window");
+        show_another_window ^= ImGui::Button("Another Window");
 
-		// Calculate and show framerate
+        // Calculate and show framerate
-		static float ms_per_frame[120] = { 0 };
+        static float ms_per_frame[120] = { 0 };
-		static int ms_per_frame_idx = 0;
+        static int ms_per_frame_idx = 0;
-		static float ms_per_frame_accum = 0.0f;
+        static float ms_per_frame_accum = 0.0f;
-		ms_per_frame_accum -= ms_per_frame[ms_per_frame_idx];
+        ms_per_frame_accum -= ms_per_frame[ms_per_frame_idx];
-		ms_per_frame[ms_per_frame_idx] = ImGui::GetIO().DeltaTime * 1000.0f;
+        ms_per_frame[ms_per_frame_idx] = ImGui::GetIO().DeltaTime * 1000.0f;
-		ms_per_frame_accum += ms_per_frame[ms_per_frame_idx];
+        ms_per_frame_accum += ms_per_frame[ms_per_frame_idx];
-		ms_per_frame_idx = (ms_per_frame_idx + 1) % 120;
+        ms_per_frame_idx = (ms_per_frame_idx + 1) % 120;
-		const float ms_per_frame_avg = ms_per_frame_accum / 120;
+        const float ms_per_frame_avg = ms_per_frame_accum / 120;
-		ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", ms_per_frame_avg, 1000.0f / ms_per_frame_avg);
+        ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", ms_per_frame_avg, 1000.0f / ms_per_frame_avg);
 
-		// Show the ImGui test window
+        // Show the ImGui test window
-		// Most of user example code is in ImGui::ShowTestWindow()
+        // Most of user example code is in ImGui::ShowTestWindow()
-		if (show_test_window)
+        if (show_test_window)
-		{
+        {
-			ImGui::SetNewWindowDefaultPos(ImVec2(650, 20));        // Normally user code doesn't need/want to call it because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
+            ImGui::SetNewWindowDefaultPos(ImVec2(650, 20));        // Normally user code doesn't need/want to call it because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
-			ImGui::ShowTestWindow(&show_test_window);
+            ImGui::ShowTestWindow(&show_test_window);
-		}
+        }
 
-		// Show another simple window
+        // Show another simple window
-		if (show_another_window)
+        if (show_another_window)
-		{
+        {
-			ImGui::Begin("Another Window", &show_another_window, ImVec2(200,100));
+            ImGui::Begin("Another Window", &show_another_window, ImVec2(200,100));
-			ImGui::Text("Hello");
+            ImGui::Text("Hello");
-			ImGui::End();
+            ImGui::End();
-		}
+        }
 
-		// Rendering
+        // Rendering
-		glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
+        glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
-		glClearColor(0.8f, 0.6f, 0.6f, 1.0f);
+        glClearColor(0.8f, 0.6f, 0.6f, 1.0f);
-		glClear(GL_COLOR_BUFFER_BIT);
+        glClear(GL_COLOR_BUFFER_BIT);
-		ImGui::Render();
+        ImGui::Render();
-		glfwSwapBuffers(window);
+        glfwSwapBuffers(window);
-	}
+    }
 
-	ImGui::Shutdown();
+    ImGui::Shutdown();
-	glfwTerminate();
+    glfwTerminate();
-	return 0;
+    return 0;
 }

extra_fonts/README.txt

@@ -0,0 +1,71 @@
+
+Extra fonts for ImGui.
+THOSE FONTS ARE OPTIONAL.
+
+ImGui embeds a copy of 'proggy_clean' that you can use without any external files.
+Export your own font with bmfont (www.angelcode.com/products/bmfont).
+
+bmfont reads fonts (.ttf, .fon, etc.) and output a .fnt file and a texture file, e.g:
+
+  proggy_clean.fon --> [bmfont] ---> proggy_clean_13.fnt
+                                     proggy_clean_13.png
+
+Configure bmfont:
+
+  - Export .fnt as Binary
+  - Tip: uncheck "Render from TrueType outline" and "Font Smoothing" for best result with non-anti-aliased type fonts. 
+    But you can experiment with other settings if you want anti-aliased fonts.
+
+
+(A) Use font data embedded in ImGui
+
+    // Access embedded font data
+    const void* fnt_data;   // pointer to FNT data
+    unsigned fnt_size;      // size of FNT data
+    const void* png_data;   // pointer to PNG data
+    unsigned int png_size;  // size of PNG data
+    ImGui::GetDefaultFontData(&fnt_data, &fnt_size, &png_data, &png_size);
+
+  1. Load the .FNT data from 'fnt_data' (NB: this is done for you by default if you don't do anything)
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.Font = new ImBitmapFont();
+    io.Font->LoadFromMemory(fnt_data, fnt_size);
+    
+  2. Load the .PNG data from 'png_data' into a texture
+
+
+
+(B) Use fonts from external files
+
+    ImGuiIO& io = ImGui::GetIO();
+
+  1. Load the .FNT data, e.g.
+    
+    // proggy_clean_13 [default]
+    io.Font->LoadFromFile("proggy_clean_13.fnt");
+    io.FontTexUvForWhite = ImVec2(0.0f/256.0f,0.0f/128);
+    io.FontYOffset = +1;
+
+    // proggy_small_12
+    io.Font = new ImBitmapFont();
+    io.Font->LoadFromFile("proggy_small_12.fnt");
+    io.FontTexUvForWhite = ImVec2(84.0f/256.0f,20.0f/64);
+    io.FontYOffset = +2;
+    
+    // proggy_small_14
+    io.Font = new ImBitmapFont();
+    io.Font->LoadFromFile("proggy_small_14.fnt");
+    io.FontTexUvForWhite = ImVec2(84.0f/256.0f,20.0f/64);
+    io.FontYOffset = +3;
+    
+    // courier_new_16
+    io.Font->LoadFromFile("courier_new_16.fnt");
+    io.FontTexUvForWhite = ImVec2(1.0f/256.0f,4.0f/128);
+    
+    // courier_new_18
+    io.Font->LoadFromFile("courier_new_18.fnt");
+    io.FontTexUvForWhite = ImVec2(4.0f/256.0f,5.0f/256);
+
+  2. Load the matching .PNG data into a texture
+

imconfig.h

@@ -4,30 +4,38 @@
 
 #pragma once
 
+//---- Define your own malloc/free/realloc functions if you want to override internal memory allocations for ImGui
+/*
+ #define IM_MALLOC(_SIZE) MyMalloc(_SIZE)
+ #define IM_FREE(_PTR) MyFree(_PTR)
+ #define IM_REALLOC(_PTR, _SIZE) MyRealloc(_PTR, _SIZE)
+
+ #include <stdlib.h>    // size_t
+ void* MyMalloc(size_t size);
+ void MyFree(void *ptr);
+ void* MyRealloc(void *ptr, size_t size);
+*/
+
 //---- Define your own ImVector<> type if you don't want to use the provided implementation defined in imgui.h
 //#include <vector>
-//#define ImVector	std::vector
+//#define ImVector  std::vector
-//#define ImVector	MyVector
+//#define ImVector  MyVector
 
 //---- Define assertion handler. Defaults to calling assert().
-//#define IM_ASSERT(_EXPR)	MyAssert(_EXPR)
+//#define IM_ASSERT(_EXPR)  MyAssert(_EXPR)
 
 //---- Don't implement default clipboard handlers for Windows (so as not to link with OpenClipboard(), etc.)
 //#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS
 
-//---- If you are loading a custom font, ImGui expect to find a pure white pixel at (0,0)
-// Change it's UV coordinate here if you can't have a white pixel at (0,0)
-//#define IMGUI_FONT_TEX_UV_FOR_WHITE	ImVec2(0.f/256.f,0.f/256.f)
-
 //---- Define implicit cast operators to convert back<>forth from your math types and ImVec2/ImVec4.
 /*
-#define IM_VEC2_CLASS_EXTRA													\
+#define IM_VEC2_CLASS_EXTRA                                                 \
-		ImVec2(const MyVec2& f) { x = f.x; y = f.y; }						\
+        ImVec2(const MyVec2& f) { x = f.x; y = f.y; }                       \
-		operator MyVec2() const { return MyVec2(x,y); }
+        operator MyVec2() const { return MyVec2(x,y); }
 
-#define IM_VEC4_CLASS_EXTRA													\
+#define IM_VEC4_CLASS_EXTRA                                                 \
-		ImVec4(const MyVec4& f) { x = f.x; y = f.y; z = f.z; w = f.w; }		\
+        ImVec4(const MyVec4& f) { x = f.x; y = f.y; z = f.z; w = f.w; }     \
-		operator MyVec4() const { return MyVec4(x,y,z,w); }
+        operator MyVec4() const { return MyVec4(x,y,z,w); }
 */
 
 //---- Freely implement extra functions within the ImGui:: namespace.
@@ -35,29 +43,8 @@
 /*
 namespace ImGui
 {
-	void	Value(const char* prefix, const MyVec2& v, const char* float_format = NULL);
+    void    Value(const char* prefix, const MyVec2& v, const char* float_format = NULL);
-	void	Value(const char* prefix, const MyVec4& v, const char* float_format = NULL);
+    void    Value(const char* prefix, const MyVec4& v, const char* float_format = NULL);
 };
 */
 
-//---- Define malloc/free/realloc functions to override internal memory allocations for ImGui
-/*
- * #define IM_MALLOC imgui_malloc
- * #define IM_FREE imgui_free
- * #define IM_REALLOC imgui_realloc
- *
- * void* imgui_malloc(size_t size);
- * void imgui_free(void *ptr);
- * void* imgui_realloc(void *ptr, size_t size);
- */
-#ifndef IM_MALLOC
-  #define IM_MALLOC malloc
-#endif
-
-#ifndef IM_FREE
-  #define IM_FREE free
-#endif
-
-#ifndef IM_REALLOC
-  #define IM_REALLOC realloc
-#endif

stb_textedit.h

@@ -1,4 +1,4 @@
-// stb_textedit.h - v1.3  - public domain - Sean Barrett
+// stb_textedit.h - v1.4  - public domain - Sean Barrett
 // Development of this library was sponsored by RAD Game Tools
 //
 // This C header file implements the guts of a multi-line text-editing
@@ -30,8 +30,9 @@
 //
 // VERSION HISTORY
 //
-//   1.3  (2013-06-19) fix mouse clicking to round to nearest char boundary
+//   1.4  (2014-08-17) fix signed/unsigned warnings
-//   1.2  (2013-05-27) fix some RAD types that had crept into the new code
+//   1.3  (2014-06-19) fix mouse clicking to round to nearest char boundary
+//   1.2  (2014-05-27) fix some RAD types that had crept into the new code
 //   1.1  (2013-12-15) move-by-word (requires STB_TEXTEDIT_IS_SPACE )
 //   1.0  (2012-07-26) improve documentation, initial public release
 //   0.3  (2012-02-24) bugfixes, single-line mode; insert mode
@@ -41,7 +42,7 @@
 // ADDITIONAL CONTRIBUTORS
 //
 //   Ulf Winklemann: move-by-word in 1.1
-//   Scott Graham: mouse selectiom bugfix in 1.3
+//   Scott Graham: mouse selection bugfix in 1.3
 //
 // USAGE
 //
@@ -445,7 +446,7 @@ static void stb_textedit_drag(STB_TEXTEDIT_STRING *str, STB_TexteditState *state
 static void stb_text_undo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state);
 static void stb_text_redo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state);
 static void stb_text_makeundo_delete(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int length);
-static void stb_text_makeundo_insert(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int length);
+static void stb_text_makeundo_insert(STB_TexteditState *state, int where, int length);
 static void stb_text_makeundo_replace(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int old_length, int new_length);
 
 typedef struct
@@ -649,7 +650,7 @@ static int stb_textedit_paste(STB_TEXTEDIT_STRING *str, STB_TexteditState *state
    stb_textedit_delete_selection(str,state);
    // try to insert the characters
    if (STB_TEXTEDIT_INSERTCHARS(str, state->cursor, text, len)) {
-      stb_text_makeundo_insert(str, state, state->cursor, len);
+      stb_text_makeundo_insert(state, state->cursor, len);
       state->cursor += len;
       state->has_preferred_x = 0;
       return 1;
@@ -684,7 +685,7 @@ retry:
             } else {
                stb_textedit_delete_selection(str,state); // implicity clamps
                if (STB_TEXTEDIT_INSERTCHARS(str, state->cursor, &ch, 1)) {
-                  stb_text_makeundo_insert(str, state, state->cursor, 1);
+                  stb_text_makeundo_insert(state, state->cursor, 1);
                   ++state->cursor;
                   state->has_preferred_x = 0;
                }
@@ -1007,13 +1008,13 @@ static void stb_textedit_discard_undo(StbUndoState *state)
          int n = state->undo_rec[0].insert_length, i;
          // delete n characters from all other records
          state->undo_char_point = state->undo_char_point - (short) n;  // vsnet05
-         memmove(state->undo_char, state->undo_char + n, state->undo_char_point*sizeof(STB_TEXTEDIT_CHARTYPE));
+         memmove(state->undo_char, state->undo_char + n, (size_t) (state->undo_char_point*sizeof(STB_TEXTEDIT_CHARTYPE)));
          for (i=0; i < state->undo_point; ++i)
             if (state->undo_rec[i].char_storage >= 0)
                state->undo_rec[i].char_storage = state->undo_rec[i].char_storage - (short) n; // vsnet05 // @OPTIMIZE: get rid of char_storage and infer it
       }
       --state->undo_point;
-      memmove(state->undo_rec, state->undo_rec+1, state->undo_point*sizeof(state->undo_rec[0]));
+      memmove(state->undo_rec, state->undo_rec+1, (size_t) (state->undo_point*sizeof(state->undo_rec[0])));
    }
 }
 
@@ -1031,13 +1032,13 @@ static void stb_textedit_discard_redo(StbUndoState *state)
          int n = state->undo_rec[k].insert_length, i;
          // delete n characters from all other records
          state->redo_char_point = state->redo_char_point + (short) n; // vsnet05
-         memmove(state->undo_char + state->redo_char_point, state->undo_char + state->redo_char_point-n, (STB_TEXTEDIT_UNDOSTATECOUNT - state->redo_char_point)*sizeof(STB_TEXTEDIT_CHARTYPE));
+         memmove(state->undo_char + state->redo_char_point, state->undo_char + state->redo_char_point-n, (size_t) ((STB_TEXTEDIT_UNDOSTATECOUNT - state->redo_char_point)*sizeof(STB_TEXTEDIT_CHARTYPE)));
          for (i=state->redo_point; i < k; ++i)
             if (state->undo_rec[i].char_storage >= 0)
                state->undo_rec[i].char_storage = state->undo_rec[i].char_storage + (short) n; // vsnet05
       }
       ++state->redo_point;
-      memmove(state->undo_rec + state->redo_point-1, state->undo_rec + state->redo_point, (STB_TEXTEDIT_UNDOSTATECOUNT - state->redo_point)*sizeof(state->undo_rec[0]));
+      memmove(state->undo_rec + state->redo_point-1, state->undo_rec + state->redo_point, (size_t) ((STB_TEXTEDIT_UNDOSTATECOUNT - state->redo_point)*sizeof(state->undo_rec[0])));
    }
 }
 
@@ -1203,7 +1204,7 @@ static void stb_text_redo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
    s->redo_point++;
 }
 
-static void stb_text_makeundo_insert(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int length)
+static void stb_text_makeundo_insert(STB_TexteditState *state, int where, int length)
 {
    stb_text_createundo(&state->undostate, where, 0, length);
 }