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Demo: Re-ordered example app code to match their menu order and forward declaration order + added header to delimitate them.

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This commit is contained in:
omar 2018-07-12 11:40:23 +02:00
parent 5e73e969fb
commit b629f90393
1 changed files with 276 additions and 231 deletions
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507
imgui_demo.cpp
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@ -77,6 +77,7 @@
#if !defined(IMGUI_DISABLE_DEMO_WINDOWS) #if !defined(IMGUI_DISABLE_DEMO_WINDOWS)
// Forward Declarations // Forward Declarations
static void ShowExampleAppMainMenuBar();
static void ShowExampleAppConsole(bool* p_open); static void ShowExampleAppConsole(bool* p_open);
static void ShowExampleAppLog(bool* p_open); static void ShowExampleAppLog(bool* p_open);
static void ShowExampleAppLayout(bool* p_open); static void ShowExampleAppLayout(bool* p_open);
@ -87,7 +88,6 @@ static void ShowExampleAppConstrainedResize(bool* p_open);
static void ShowExampleAppSimpleOverlay(bool* p_open); static void ShowExampleAppSimpleOverlay(bool* p_open);
static void ShowExampleAppWindowTitles(bool* p_open); static void ShowExampleAppWindowTitles(bool* p_open);
static void ShowExampleAppCustomRendering(bool* p_open); static void ShowExampleAppCustomRendering(bool* p_open);
static void ShowExampleAppMainMenuBar();
static void ShowExampleMenuFile(); static void ShowExampleMenuFile();
// Helper to display a little (?) mark which shows a tooltip when hovered. // Helper to display a little (?) mark which shows a tooltip when hovered.
@ -2252,6 +2252,7 @@ void ImGui::ShowDemoWindow(bool* p_open)
} }
} }
// End of ShowDemoWindow()
ImGui::End(); ImGui::End();
} }
@ -2517,6 +2518,10 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
ImGui::PopItemWidth(); ImGui::PopItemWidth();
} }
//-----------------------------------------------------------------------------
// EXAMPLE APP CODE: MAIN MENU BAR
//-----------------------------------------------------------------------------
// Demonstrate creating a fullscreen menu bar and populating it. // Demonstrate creating a fullscreen menu bar and populating it.
static void ShowExampleAppMainMenuBar() static void ShowExampleAppMainMenuBar()
{ {
@ -2606,235 +2611,9 @@ static void ShowExampleMenuFile()
if (ImGui::MenuItem("Quit", "Alt+F4")) {} if (ImGui::MenuItem("Quit", "Alt+F4")) {}
} }
// Demonstrate creating a window which gets auto-resized according to its content. //-----------------------------------------------------------------------------
static void ShowExampleAppAutoResize(bool* p_open) // EXAMPLE APP CODE: CONSOLE
{ //-----------------------------------------------------------------------------
if (!ImGui::Begin("Example: Auto-resizing window", p_open, ImGuiWindowFlags_AlwaysAutoResize))
{
ImGui::End();
return;
}
static int lines = 10;
ImGui::Text("Window will resize every-frame to the size of its content.\nNote that you probably don't want to query the window size to\noutput your content because that would create a feedback loop.");
ImGui::SliderInt("Number of lines", &lines, 1, 20);
for (int i = 0; i < lines; i++)
ImGui::Text("%*sThis is line %d", i*4, "", i); // Pad with space to extend size horizontally
ImGui::End();
}
// Demonstrate creating a window with custom resize constraints.
static void ShowExampleAppConstrainedResize(bool* p_open)
{
struct CustomConstraints // Helper functions to demonstrate programmatic constraints
{
static void Square(ImGuiSizeCallbackData* data) { data->DesiredSize = ImVec2(IM_MAX(data->DesiredSize.x, data->DesiredSize.y), IM_MAX(data->DesiredSize.x, data->DesiredSize.y)); }
static void Step(ImGuiSizeCallbackData* data) { float step = (float)(int)(intptr_t)data->UserData; data->DesiredSize = ImVec2((int)(data->DesiredSize.x / step + 0.5f) * step, (int)(data->DesiredSize.y / step + 0.5f) * step); }
};
static bool auto_resize = false;
static int type = 0;
static int display_lines = 10;
if (type == 0) ImGui::SetNextWindowSizeConstraints(ImVec2(-1, 0), ImVec2(-1, FLT_MAX)); // Vertical only
if (type == 1) ImGui::SetNextWindowSizeConstraints(ImVec2(0, -1), ImVec2(FLT_MAX, -1)); // Horizontal only
if (type == 2) ImGui::SetNextWindowSizeConstraints(ImVec2(100, 100), ImVec2(FLT_MAX, FLT_MAX)); // Width > 100, Height > 100
if (type == 3) ImGui::SetNextWindowSizeConstraints(ImVec2(400, -1), ImVec2(500, -1)); // Width 400-500
if (type == 4) ImGui::SetNextWindowSizeConstraints(ImVec2(-1, 400), ImVec2(-1, 500)); // Height 400-500
if (type == 5) ImGui::SetNextWindowSizeConstraints(ImVec2(0, 0), ImVec2(FLT_MAX, FLT_MAX), CustomConstraints::Square); // Always Square
if (type == 6) ImGui::SetNextWindowSizeConstraints(ImVec2(0, 0), ImVec2(FLT_MAX, FLT_MAX), CustomConstraints::Step, (void*)100);// Fixed Step
ImGuiWindowFlags flags = auto_resize ? ImGuiWindowFlags_AlwaysAutoResize : 0;
if (ImGui::Begin("Example: Constrained Resize", p_open, flags))
{
const char* desc[] =
{
"Resize vertical only",
"Resize horizontal only",
"Width > 100, Height > 100",
"Width 400-500",
"Height 400-500",
"Custom: Always Square",
"Custom: Fixed Steps (100)",
};
if (ImGui::Button("200x200")) { ImGui::SetWindowSize(ImVec2(200, 200)); } ImGui::SameLine();
if (ImGui::Button("500x500")) { ImGui::SetWindowSize(ImVec2(500, 500)); } ImGui::SameLine();
if (ImGui::Button("800x200")) { ImGui::SetWindowSize(ImVec2(800, 200)); }
ImGui::PushItemWidth(200);
ImGui::Combo("Constraint", &type, desc, IM_ARRAYSIZE(desc));
ImGui::DragInt("Lines", &display_lines, 0.2f, 1, 100);
ImGui::PopItemWidth();
ImGui::Checkbox("Auto-resize", &auto_resize);
for (int i = 0; i < display_lines; i++)
ImGui::Text("%*sHello, sailor! Making this line long enough for the example.", i * 4, "");
}
ImGui::End();
}
// Demonstrate creating a simple static window with no decoration + a context-menu to choose which corner of the screen to use.
static void ShowExampleAppSimpleOverlay(bool* p_open)
{
const float DISTANCE = 10.0f;
static int corner = 0;
ImVec2 window_pos = ImVec2((corner & 1) ? ImGui::GetIO().DisplaySize.x - DISTANCE : DISTANCE, (corner & 2) ? ImGui::GetIO().DisplaySize.y - DISTANCE : DISTANCE);
ImVec2 window_pos_pivot = ImVec2((corner & 1) ? 1.0f : 0.0f, (corner & 2) ? 1.0f : 0.0f);
if (corner != -1)
ImGui::SetNextWindowPos(window_pos, ImGuiCond_Always, window_pos_pivot);
ImGui::SetNextWindowBgAlpha(0.3f); // Transparent background
if (ImGui::Begin("Example: Simple Overlay", p_open, (corner != -1 ? ImGuiWindowFlags_NoMove : 0) | ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_NoFocusOnAppearing|ImGuiWindowFlags_NoNav))
{
ImGui::Text("Simple overlay\n" "in the corner of the screen.\n" "(right-click to change position)");
ImGui::Separator();
if (ImGui::IsMousePosValid())
ImGui::Text("Mouse Position: (%.1f,%.1f)", ImGui::GetIO().MousePos.x, ImGui::GetIO().MousePos.y);
else
ImGui::Text("Mouse Position: <invalid>");
if (ImGui::BeginPopupContextWindow())
{
if (ImGui::MenuItem("Custom", NULL, corner == -1)) corner = -1;
if (ImGui::MenuItem("Top-left", NULL, corner == 0)) corner = 0;
if (ImGui::MenuItem("Top-right", NULL, corner == 1)) corner = 1;
if (ImGui::MenuItem("Bottom-left", NULL, corner == 2)) corner = 2;
if (ImGui::MenuItem("Bottom-right", NULL, corner == 3)) corner = 3;
if (p_open && ImGui::MenuItem("Close")) *p_open = false;
ImGui::EndPopup();
}
}
ImGui::End();
}
// Demonstrate using "##" and "###" in identifiers to manipulate ID generation.
// This apply to regular items as well. Read FAQ section "How can I have multiple widgets with the same label? Can I have widget without a label? (Yes). A primer on the purpose of labels/IDs." for details.
static void ShowExampleAppWindowTitles(bool*)
{
// By default, Windows are uniquely identified by their title.
// You can use the "##" and "###" markers to manipulate the display/ID.
// Using "##" to display same title but have unique identifier.
ImGui::SetNextWindowPos(ImVec2(100,100), ImGuiCond_FirstUseEver);
ImGui::Begin("Same title as another window##1");
ImGui::Text("This is window 1.\nMy title is the same as window 2, but my identifier is unique.");
ImGui::End();
ImGui::SetNextWindowPos(ImVec2(100,200), ImGuiCond_FirstUseEver);
ImGui::Begin("Same title as another window##2");
ImGui::Text("This is window 2.\nMy title is the same as window 1, but my identifier is unique.");
ImGui::End();
// Using "###" to display a changing title but keep a static identifier "AnimatedTitle"
char buf[128];
sprintf(buf, "Animated title %c %d###AnimatedTitle", "|/-\\"[(int)(ImGui::GetTime()/0.25f)&3], ImGui::GetFrameCount());
ImGui::SetNextWindowPos(ImVec2(100,300), ImGuiCond_FirstUseEver);
ImGui::Begin(buf);
ImGui::Text("This window has a changing title.");
ImGui::End();
}
// Demonstrate using the low-level ImDrawList to draw custom shapes.
static void ShowExampleAppCustomRendering(bool* p_open)
{
ImGui::SetNextWindowSize(ImVec2(350,560), ImGuiCond_FirstUseEver);
if (!ImGui::Begin("Example: Custom rendering", p_open))
{
ImGui::End();
return;
}
// Tip: If you do a lot of custom rendering, you probably want to use your own geometrical types and benefit of overloaded operators, etc.
// Define IM_VEC2_CLASS_EXTRA in imconfig.h to create implicit conversions between your types and ImVec2/ImVec4.
// ImGui defines overloaded operators but they are internal to imgui.cpp and not exposed outside (to avoid messing with your types)
// In this example we are not using the maths operators!
ImDrawList* draw_list = ImGui::GetWindowDrawList();
// Primitives
ImGui::Text("Primitives");
static float sz = 36.0f;
static float thickness = 4.0f;
static ImVec4 col = ImVec4(1.0f,1.0f,0.4f,1.0f);
ImGui::DragFloat("Size", &sz, 0.2f, 2.0f, 72.0f, "%.0f");
ImGui::DragFloat("Thickness", &thickness, 0.05f, 1.0f, 8.0f, "%.02f");
ImGui::ColorEdit3("Color", &col.x);
{
const ImVec2 p = ImGui::GetCursorScreenPos();
const ImU32 col32 = ImColor(col);
float x = p.x + 4.0f, y = p.y + 4.0f, spacing = 8.0f;
for (int n = 0; n < 2; n++)
{
float curr_thickness = (n == 0) ? 1.0f : thickness;
draw_list->AddCircle(ImVec2(x+sz*0.5f, y+sz*0.5f), sz*0.5f, col32, 20, curr_thickness); x += sz+spacing;
draw_list->AddRect(ImVec2(x, y), ImVec2(x+sz, y+sz), col32, 0.0f, ImDrawCornerFlags_All, curr_thickness); x += sz+spacing;
draw_list->AddRect(ImVec2(x, y), ImVec2(x+sz, y+sz), col32, 10.0f, ImDrawCornerFlags_All, curr_thickness); x += sz+spacing;
draw_list->AddRect(ImVec2(x, y), ImVec2(x+sz, y+sz), col32, 10.0f, ImDrawCornerFlags_TopLeft|ImDrawCornerFlags_BotRight, curr_thickness); x += sz+spacing;
draw_list->AddTriangle(ImVec2(x+sz*0.5f, y), ImVec2(x+sz,y+sz-0.5f), ImVec2(x,y+sz-0.5f), col32, curr_thickness); x += sz+spacing;
draw_list->AddLine(ImVec2(x, y), ImVec2(x+sz, y ), col32, curr_thickness); x += sz+spacing; // Horizontal line (note: drawing a filled rectangle will be faster!)
draw_list->AddLine(ImVec2(x, y), ImVec2(x, y+sz), col32, curr_thickness); x += spacing; // Vertical line (note: drawing a filled rectangle will be faster!)
draw_list->AddLine(ImVec2(x, y), ImVec2(x+sz, y+sz), col32, curr_thickness); x += sz+spacing; // Diagonal line
draw_list->AddBezierCurve(ImVec2(x, y), ImVec2(x+sz*1.3f,y+sz*0.3f), ImVec2(x+sz-sz*1.3f,y+sz-sz*0.3f), ImVec2(x+sz, y+sz), col32, curr_thickness);
x = p.x + 4;
y += sz+spacing;
}
draw_list->AddCircleFilled(ImVec2(x+sz*0.5f, y+sz*0.5f), sz*0.5f, col32, 32); x += sz+spacing;
draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x+sz, y+sz), col32); x += sz+spacing;
draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x+sz, y+sz), col32, 10.0f); x += sz+spacing;
draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x+sz, y+sz), col32, 10.0f, ImDrawCornerFlags_TopLeft|ImDrawCornerFlags_BotRight); x += sz+spacing;
draw_list->AddTriangleFilled(ImVec2(x+sz*0.5f, y), ImVec2(x+sz,y+sz-0.5f), ImVec2(x,y+sz-0.5f), col32); x += sz+spacing;
draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x+sz, y+thickness), col32); x += sz+spacing; // Horizontal line (faster than AddLine, but only handle integer thickness)
draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x+thickness, y+sz), col32); x += spacing+spacing; // Vertical line (faster than AddLine, but only handle integer thickness)
draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x+1, y+1), col32); x += sz; // Pixel (faster than AddLine)
draw_list->AddRectFilledMultiColor(ImVec2(x, y), ImVec2(x+sz, y+sz), IM_COL32(0,0,0,255), IM_COL32(255,0,0,255), IM_COL32(255,255,0,255), IM_COL32(0,255,0,255));
ImGui::Dummy(ImVec2((sz+spacing)*8, (sz+spacing)*3));
}
ImGui::Separator();
{
static ImVector<ImVec2> points;
static bool adding_line = false;
ImGui::Text("Canvas example");
if (ImGui::Button("Clear")) points.clear();
if (points.Size >= 2) { ImGui::SameLine(); if (ImGui::Button("Undo")) { points.pop_back(); points.pop_back(); } }
ImGui::Text("Left-click and drag to add lines,\nRight-click to undo");
// Here we are using InvisibleButton() as a convenience to 1) advance the cursor and 2) allows us to use IsItemHovered()
// But you can also draw directly and poll mouse/keyboard by yourself. You can manipulate the cursor using GetCursorPos() and SetCursorPos().
// If you only use the ImDrawList API, you can notify the owner window of its extends by using SetCursorPos(max).
ImVec2 canvas_pos = ImGui::GetCursorScreenPos(); // ImDrawList API uses screen coordinates!
ImVec2 canvas_size = ImGui::GetContentRegionAvail(); // Resize canvas to what's available
if (canvas_size.x < 50.0f) canvas_size.x = 50.0f;
if (canvas_size.y < 50.0f) canvas_size.y = 50.0f;
draw_list->AddRectFilledMultiColor(canvas_pos, ImVec2(canvas_pos.x + canvas_size.x, canvas_pos.y + canvas_size.y), IM_COL32(50,50,50,255), IM_COL32(50,50,60,255), IM_COL32(60,60,70,255), IM_COL32(50,50,60,255));
draw_list->AddRect(canvas_pos, ImVec2(canvas_pos.x + canvas_size.x, canvas_pos.y + canvas_size.y), IM_COL32(255,255,255,255));
bool adding_preview = false;
ImGui::InvisibleButton("canvas", canvas_size);
ImVec2 mouse_pos_in_canvas = ImVec2(ImGui::GetIO().MousePos.x - canvas_pos.x, ImGui::GetIO().MousePos.y - canvas_pos.y);
if (adding_line)
{
adding_preview = true;
points.push_back(mouse_pos_in_canvas);
if (!ImGui::IsMouseDown(0))
adding_line = adding_preview = false;
}
if (ImGui::IsItemHovered())
{
if (!adding_line && ImGui::IsMouseClicked(0))
{
points.push_back(mouse_pos_in_canvas);
adding_line = true;
}
if (ImGui::IsMouseClicked(1) && !points.empty())
{
adding_line = adding_preview = false;
points.pop_back();
points.pop_back();
}
}
draw_list->PushClipRect(canvas_pos, ImVec2(canvas_pos.x+canvas_size.x, canvas_pos.y+canvas_size.y), true); // clip lines within the canvas (if we resize it, etc.)
for (int i = 0; i < points.Size - 1; i += 2)
draw_list->AddLine(ImVec2(canvas_pos.x + points[i].x, canvas_pos.y + points[i].y), ImVec2(canvas_pos.x + points[i+1].x, canvas_pos.y + points[i+1].y), IM_COL32(255,255,0,255), 2.0f);
draw_list->PopClipRect();
if (adding_preview)
points.pop_back();
}
ImGui::End();
}
// Demonstrating creating a simple console window, with scrolling, filtering, completion and history. // Demonstrating creating a simple console window, with scrolling, filtering, completion and history.
// For the console example, here we are using a more C++ like approach of declaring a class to hold the data and the functions. // For the console example, here we are using a more C++ like approach of declaring a class to hold the data and the functions.
@ -2855,7 +2634,7 @@ struct ExampleAppConsole
Commands.push_back("HELP"); Commands.push_back("HELP");
Commands.push_back("HISTORY"); Commands.push_back("HISTORY");
Commands.push_back("CLEAR"); Commands.push_back("CLEAR");
Commands.push_back("CLASSIFY"); // "classify" is here to provide an example of "C"+[tab] completing to "CL" and displaying matches. Commands.push_back("CLASSIFY"); // "classify" is only here to provide an example of "C"+[tab] completing to "CL" and displaying matches.
AddLog("Welcome to Dear ImGui!"); AddLog("Welcome to Dear ImGui!");
} }
~ExampleAppConsole() ~ExampleAppConsole()
@ -3143,6 +2922,10 @@ static void ShowExampleAppConsole(bool* p_open)
console.Draw("Example: Console", p_open); console.Draw("Example: Console", p_open);
} }
//-----------------------------------------------------------------------------
// EXAMPLE APP CODE: LOG
//-----------------------------------------------------------------------------
// Usage: // Usage:
// static ExampleAppLog my_log; // static ExampleAppLog my_log;
// my_log.AddLog("Hello %d world\n", 123); // my_log.AddLog("Hello %d world\n", 123);
@ -3229,6 +3012,10 @@ static void ShowExampleAppLog(bool* p_open)
log.Draw("Example: Log", p_open); log.Draw("Example: Log", p_open);
} }
//-----------------------------------------------------------------------------
// EXAMPLE APP CODE: SIMPLE LAYOUT
//-----------------------------------------------------------------------------
// Demonstrate create a window with multiple child windows. // Demonstrate create a window with multiple child windows.
static void ShowExampleAppLayout(bool* p_open) static void ShowExampleAppLayout(bool* p_open)
{ {
@ -3273,6 +3060,10 @@ static void ShowExampleAppLayout(bool* p_open)
ImGui::End(); ImGui::End();
} }
//-----------------------------------------------------------------------------
// EXAMPLE APP CODE: PROPERTY EDITOR
//-----------------------------------------------------------------------------
// Demonstrate create a simple property editor. // Demonstrate create a simple property editor.
static void ShowExampleAppPropertyEditor(bool* p_open) static void ShowExampleAppPropertyEditor(bool* p_open)
{ {
@ -3342,6 +3133,10 @@ static void ShowExampleAppPropertyEditor(bool* p_open)
ImGui::End(); ImGui::End();
} }
//-----------------------------------------------------------------------------
// EXAMPLE APP CODE: LONG TEXT
//-----------------------------------------------------------------------------
// Demonstrate/test rendering huge amount of text, and the incidence of clipping. // Demonstrate/test rendering huge amount of text, and the incidence of clipping.
static void ShowExampleAppLongText(bool* p_open) static void ShowExampleAppLongText(bool* p_open)
{ {
@ -3396,6 +3191,256 @@ static void ShowExampleAppLongText(bool* p_open)
ImGui::End(); ImGui::End();
} }
//-----------------------------------------------------------------------------
// EXAMPLE APP CODE: AUTO RESIZE
//-----------------------------------------------------------------------------
// Demonstrate creating a window which gets auto-resized according to its content.
static void ShowExampleAppAutoResize(bool* p_open)
{
if (!ImGui::Begin("Example: Auto-resizing window", p_open, ImGuiWindowFlags_AlwaysAutoResize))
{
ImGui::End();
return;
}
static int lines = 10;
ImGui::Text("Window will resize every-frame to the size of its content.\nNote that you probably don't want to query the window size to\noutput your content because that would create a feedback loop.");
ImGui::SliderInt("Number of lines", &lines, 1, 20);
for (int i = 0; i < lines; i++)
ImGui::Text("%*sThis is line %d", i * 4, "", i); // Pad with space to extend size horizontally
ImGui::End();
}
//-----------------------------------------------------------------------------
// EXAMPLE APP CODE: CONSTRAINED RESIZE
//-----------------------------------------------------------------------------
// Demonstrate creating a window with custom resize constraints.
static void ShowExampleAppConstrainedResize(bool* p_open)
{
struct CustomConstraints // Helper functions to demonstrate programmatic constraints
{
static void Square(ImGuiSizeCallbackData* data) { data->DesiredSize = ImVec2(IM_MAX(data->DesiredSize.x, data->DesiredSize.y), IM_MAX(data->DesiredSize.x, data->DesiredSize.y)); }
static void Step(ImGuiSizeCallbackData* data) { float step = (float)(int)(intptr_t)data->UserData; data->DesiredSize = ImVec2((int)(data->DesiredSize.x / step + 0.5f) * step, (int)(data->DesiredSize.y / step + 0.5f) * step); }
};
static bool auto_resize = false;
static int type = 0;
static int display_lines = 10;
if (type == 0) ImGui::SetNextWindowSizeConstraints(ImVec2(-1, 0), ImVec2(-1, FLT_MAX)); // Vertical only
if (type == 1) ImGui::SetNextWindowSizeConstraints(ImVec2(0, -1), ImVec2(FLT_MAX, -1)); // Horizontal only
if (type == 2) ImGui::SetNextWindowSizeConstraints(ImVec2(100, 100), ImVec2(FLT_MAX, FLT_MAX)); // Width > 100, Height > 100
if (type == 3) ImGui::SetNextWindowSizeConstraints(ImVec2(400, -1), ImVec2(500, -1)); // Width 400-500
if (type == 4) ImGui::SetNextWindowSizeConstraints(ImVec2(-1, 400), ImVec2(-1, 500)); // Height 400-500
if (type == 5) ImGui::SetNextWindowSizeConstraints(ImVec2(0, 0), ImVec2(FLT_MAX, FLT_MAX), CustomConstraints::Square); // Always Square
if (type == 6) ImGui::SetNextWindowSizeConstraints(ImVec2(0, 0), ImVec2(FLT_MAX, FLT_MAX), CustomConstraints::Step, (void*)100);// Fixed Step
ImGuiWindowFlags flags = auto_resize ? ImGuiWindowFlags_AlwaysAutoResize : 0;
if (ImGui::Begin("Example: Constrained Resize", p_open, flags))
{
const char* desc[] =
{
"Resize vertical only",
"Resize horizontal only",
"Width > 100, Height > 100",
"Width 400-500",
"Height 400-500",
"Custom: Always Square",
"Custom: Fixed Steps (100)",
};
if (ImGui::Button("200x200")) { ImGui::SetWindowSize(ImVec2(200, 200)); } ImGui::SameLine();
if (ImGui::Button("500x500")) { ImGui::SetWindowSize(ImVec2(500, 500)); } ImGui::SameLine();
if (ImGui::Button("800x200")) { ImGui::SetWindowSize(ImVec2(800, 200)); }
ImGui::PushItemWidth(200);
ImGui::Combo("Constraint", &type, desc, IM_ARRAYSIZE(desc));
ImGui::DragInt("Lines", &display_lines, 0.2f, 1, 100);
ImGui::PopItemWidth();
ImGui::Checkbox("Auto-resize", &auto_resize);
for (int i = 0; i < display_lines; i++)
ImGui::Text("%*sHello, sailor! Making this line long enough for the example.", i * 4, "");
}
ImGui::End();
}
//-----------------------------------------------------------------------------
// EXAMPLE APP CODE: SIMPLE OVERLAY
//-----------------------------------------------------------------------------
// Demonstrate creating a simple static window with no decoration + a context-menu to choose which corner of the screen to use.
static void ShowExampleAppSimpleOverlay(bool* p_open)
{
const float DISTANCE = 10.0f;
static int corner = 0;
ImVec2 window_pos = ImVec2((corner & 1) ? ImGui::GetIO().DisplaySize.x - DISTANCE : DISTANCE, (corner & 2) ? ImGui::GetIO().DisplaySize.y - DISTANCE : DISTANCE);
ImVec2 window_pos_pivot = ImVec2((corner & 1) ? 1.0f : 0.0f, (corner & 2) ? 1.0f : 0.0f);
if (corner != -1)
ImGui::SetNextWindowPos(window_pos, ImGuiCond_Always, window_pos_pivot);
ImGui::SetNextWindowBgAlpha(0.3f); // Transparent background
if (ImGui::Begin("Example: Simple Overlay", p_open, (corner != -1 ? ImGuiWindowFlags_NoMove : 0) | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoNav))
{
ImGui::Text("Simple overlay\n" "in the corner of the screen.\n" "(right-click to change position)");
ImGui::Separator();
if (ImGui::IsMousePosValid())
ImGui::Text("Mouse Position: (%.1f,%.1f)", ImGui::GetIO().MousePos.x, ImGui::GetIO().MousePos.y);
else
ImGui::Text("Mouse Position: <invalid>");
if (ImGui::BeginPopupContextWindow())
{
if (ImGui::MenuItem("Custom", NULL, corner == -1)) corner = -1;
if (ImGui::MenuItem("Top-left", NULL, corner == 0)) corner = 0;
if (ImGui::MenuItem("Top-right", NULL, corner == 1)) corner = 1;
if (ImGui::MenuItem("Bottom-left", NULL, corner == 2)) corner = 2;
if (ImGui::MenuItem("Bottom-right", NULL, corner == 3)) corner = 3;
if (p_open && ImGui::MenuItem("Close")) *p_open = false;
ImGui::EndPopup();
}
}
ImGui::End();
}
//-----------------------------------------------------------------------------
// EXAMPLE APP CODE: WINDOW TITLES
//-----------------------------------------------------------------------------
// Demonstrate using "##" and "###" in identifiers to manipulate ID generation.
// This apply to all regular items as well. Read FAQ section "How can I have multiple widgets with the same label? Can I have widget without a label? (Yes). A primer on the purpose of labels/IDs." for details.
static void ShowExampleAppWindowTitles(bool*)
{
// By default, Windows are uniquely identified by their title.
// You can use the "##" and "###" markers to manipulate the display/ID.
// Using "##" to display same title but have unique identifier.
ImGui::SetNextWindowPos(ImVec2(100, 100), ImGuiCond_FirstUseEver);
ImGui::Begin("Same title as another window##1");
ImGui::Text("This is window 1.\nMy title is the same as window 2, but my identifier is unique.");
ImGui::End();
ImGui::SetNextWindowPos(ImVec2(100, 200), ImGuiCond_FirstUseEver);
ImGui::Begin("Same title as another window##2");
ImGui::Text("This is window 2.\nMy title is the same as window 1, but my identifier is unique.");
ImGui::End();
// Using "###" to display a changing title but keep a static identifier "AnimatedTitle"
char buf[128];
sprintf(buf, "Animated title %c %d###AnimatedTitle", "|/-\\"[(int)(ImGui::GetTime() / 0.25f) & 3], ImGui::GetFrameCount());
ImGui::SetNextWindowPos(ImVec2(100, 300), ImGuiCond_FirstUseEver);
ImGui::Begin(buf);
ImGui::Text("This window has a changing title.");
ImGui::End();
}
//-----------------------------------------------------------------------------
// EXAMPLE APP CODE: CUSTOM RENDERING
//-----------------------------------------------------------------------------
// Demonstrate using the low-level ImDrawList to draw custom shapes.
static void ShowExampleAppCustomRendering(bool* p_open)
{
ImGui::SetNextWindowSize(ImVec2(350, 560), ImGuiCond_FirstUseEver);
if (!ImGui::Begin("Example: Custom rendering", p_open))
{
ImGui::End();
return;
}
// Tip: If you do a lot of custom rendering, you probably want to use your own geometrical types and benefit of overloaded operators, etc.
// Define IM_VEC2_CLASS_EXTRA in imconfig.h to create implicit conversions between your types and ImVec2/ImVec4.
// ImGui defines overloaded operators but they are internal to imgui.cpp and not exposed outside (to avoid messing with your types)
// In this example we are not using the maths operators!
ImDrawList* draw_list = ImGui::GetWindowDrawList();
// Primitives
ImGui::Text("Primitives");
static float sz = 36.0f;
static float thickness = 4.0f;
static ImVec4 col = ImVec4(1.0f, 1.0f, 0.4f, 1.0f);
ImGui::DragFloat("Size", &sz, 0.2f, 2.0f, 72.0f, "%.0f");
ImGui::DragFloat("Thickness", &thickness, 0.05f, 1.0f, 8.0f, "%.02f");
ImGui::ColorEdit3("Color", &col.x);
{
const ImVec2 p = ImGui::GetCursorScreenPos();
const ImU32 col32 = ImColor(col);
float x = p.x + 4.0f, y = p.y + 4.0f, spacing = 8.0f;
for (int n = 0; n < 2; n++)
{
float curr_thickness = (n == 0) ? 1.0f : thickness;
draw_list->AddCircle(ImVec2(x + sz*0.5f, y + sz*0.5f), sz*0.5f, col32, 20, curr_thickness); x += sz + spacing;
draw_list->AddRect(ImVec2(x, y), ImVec2(x + sz, y + sz), col32, 0.0f, ImDrawCornerFlags_All, curr_thickness); x += sz + spacing;
draw_list->AddRect(ImVec2(x, y), ImVec2(x + sz, y + sz), col32, 10.0f, ImDrawCornerFlags_All, curr_thickness); x += sz + spacing;
draw_list->AddRect(ImVec2(x, y), ImVec2(x + sz, y + sz), col32, 10.0f, ImDrawCornerFlags_TopLeft | ImDrawCornerFlags_BotRight, curr_thickness); x += sz + spacing;
draw_list->AddTriangle(ImVec2(x + sz*0.5f, y), ImVec2(x + sz, y + sz - 0.5f), ImVec2(x, y + sz - 0.5f), col32, curr_thickness); x += sz + spacing;
draw_list->AddLine(ImVec2(x, y), ImVec2(x + sz, y), col32, curr_thickness); x += sz + spacing; // Horizontal line (note: drawing a filled rectangle will be faster!)
draw_list->AddLine(ImVec2(x, y), ImVec2(x, y + sz), col32, curr_thickness); x += spacing; // Vertical line (note: drawing a filled rectangle will be faster!)
draw_list->AddLine(ImVec2(x, y), ImVec2(x + sz, y + sz), col32, curr_thickness); x += sz + spacing; // Diagonal line
draw_list->AddBezierCurve(ImVec2(x, y), ImVec2(x + sz*1.3f, y + sz*0.3f), ImVec2(x + sz - sz*1.3f, y + sz - sz*0.3f), ImVec2(x + sz, y + sz), col32, curr_thickness);
x = p.x + 4;
y += sz + spacing;
}
draw_list->AddCircleFilled(ImVec2(x + sz*0.5f, y + sz*0.5f), sz*0.5f, col32, 32); x += sz + spacing;
draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + sz, y + sz), col32); x += sz + spacing;
draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + sz, y + sz), col32, 10.0f); x += sz + spacing;
draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + sz, y + sz), col32, 10.0f, ImDrawCornerFlags_TopLeft | ImDrawCornerFlags_BotRight); x += sz + spacing;
draw_list->AddTriangleFilled(ImVec2(x + sz*0.5f, y), ImVec2(x + sz, y + sz - 0.5f), ImVec2(x, y + sz - 0.5f), col32); x += sz + spacing;
draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + sz, y + thickness), col32); x += sz + spacing; // Horizontal line (faster than AddLine, but only handle integer thickness)
draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + thickness, y + sz), col32); x += spacing + spacing; // Vertical line (faster than AddLine, but only handle integer thickness)
draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + 1, y + 1), col32); x += sz; // Pixel (faster than AddLine)
draw_list->AddRectFilledMultiColor(ImVec2(x, y), ImVec2(x + sz, y + sz), IM_COL32(0, 0, 0, 255), IM_COL32(255, 0, 0, 255), IM_COL32(255, 255, 0, 255), IM_COL32(0, 255, 0, 255));
ImGui::Dummy(ImVec2((sz + spacing) * 8, (sz + spacing) * 3));
}
ImGui::Separator();
{
static ImVector<ImVec2> points;
static bool adding_line = false;
ImGui::Text("Canvas example");
if (ImGui::Button("Clear")) points.clear();
if (points.Size >= 2) { ImGui::SameLine(); if (ImGui::Button("Undo")) { points.pop_back(); points.pop_back(); } }
ImGui::Text("Left-click and drag to add lines,\nRight-click to undo");
// Here we are using InvisibleButton() as a convenience to 1) advance the cursor and 2) allows us to use IsItemHovered()
// But you can also draw directly and poll mouse/keyboard by yourself. You can manipulate the cursor using GetCursorPos() and SetCursorPos().
// If you only use the ImDrawList API, you can notify the owner window of its extends by using SetCursorPos(max).
ImVec2 canvas_pos = ImGui::GetCursorScreenPos(); // ImDrawList API uses screen coordinates!
ImVec2 canvas_size = ImGui::GetContentRegionAvail(); // Resize canvas to what's available
if (canvas_size.x < 50.0f) canvas_size.x = 50.0f;
if (canvas_size.y < 50.0f) canvas_size.y = 50.0f;
draw_list->AddRectFilledMultiColor(canvas_pos, ImVec2(canvas_pos.x + canvas_size.x, canvas_pos.y + canvas_size.y), IM_COL32(50, 50, 50, 255), IM_COL32(50, 50, 60, 255), IM_COL32(60, 60, 70, 255), IM_COL32(50, 50, 60, 255));
draw_list->AddRect(canvas_pos, ImVec2(canvas_pos.x + canvas_size.x, canvas_pos.y + canvas_size.y), IM_COL32(255, 255, 255, 255));
bool adding_preview = false;
ImGui::InvisibleButton("canvas", canvas_size);
ImVec2 mouse_pos_in_canvas = ImVec2(ImGui::GetIO().MousePos.x - canvas_pos.x, ImGui::GetIO().MousePos.y - canvas_pos.y);
if (adding_line)
{
adding_preview = true;
points.push_back(mouse_pos_in_canvas);
if (!ImGui::IsMouseDown(0))
adding_line = adding_preview = false;
}
if (ImGui::IsItemHovered())
{
if (!adding_line && ImGui::IsMouseClicked(0))
{
points.push_back(mouse_pos_in_canvas);
adding_line = true;
}
if (ImGui::IsMouseClicked(1) && !points.empty())
{
adding_line = adding_preview = false;
points.pop_back();
points.pop_back();
}
}
draw_list->PushClipRect(canvas_pos, ImVec2(canvas_pos.x + canvas_size.x, canvas_pos.y + canvas_size.y), true); // clip lines within the canvas (if we resize it, etc.)
for (int i = 0; i < points.Size - 1; i += 2)
draw_list->AddLine(ImVec2(canvas_pos.x + points[i].x, canvas_pos.y + points[i].y), ImVec2(canvas_pos.x + points[i + 1].x, canvas_pos.y + points[i + 1].y), IM_COL32(255, 255, 0, 255), 2.0f);
draw_list->PopClipRect();
if (adding_preview)
points.pop_back();
}
ImGui::End();
}
// End of Demo code // End of Demo code
#else #else