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Examples: Mouse cursor handling comments/tweaks to homogenize. (#1495)

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This commit is contained in:
omar
2018-02-20 14:23:22 +01:00
parent d534207622
commit daddd09cd5
5 changed files with 38 additions and 32 deletions
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29
examples/sdl_opengl3_example/imgui_impl_sdl_gl3.cpp
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@ -46,7 +46,7 @@ static int g_ShaderHandle = 0, g_VertHandle = 0, g_FragHandle = 0;
static int g_AttribLocationTex = 0, g_AttribLocationProjMtx = 0;
static int g_AttribLocationPosition = 0, g_AttribLocationUV = 0, g_AttribLocationColor = 0;
static unsigned int g_VboHandle = 0, g_VaoHandle = 0, g_ElementsHandle = 0;
static SDL_Cursor* g_SdlCursors[ImGuiMouseCursor_Count_] = { 0 };
static SDL_Cursor* g_MouseCursors[ImGuiMouseCursor_Count_] = { 0 };
// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
// Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly, in order to be able to run within any OpenGL engine that doesn't do so.
@ -366,13 +366,13 @@ bool ImGui_ImplSdlGL3_Init(SDL_Window* window)
io.GetClipboardTextFn = ImGui_ImplSdlGL3_GetClipboardText;
io.ClipboardUserData = NULL;
g_SdlCursors[ImGuiMouseCursor_Arrow] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
g_SdlCursors[ImGuiMouseCursor_TextInput] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM);
g_SdlCursors[ImGuiMouseCursor_ResizeAll] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEALL);
g_SdlCursors[ImGuiMouseCursor_ResizeNS] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENS);
g_SdlCursors[ImGuiMouseCursor_ResizeEW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEWE);
g_SdlCursors[ImGuiMouseCursor_ResizeNESW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENESW);
g_SdlCursors[ImGuiMouseCursor_ResizeNWSE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENWSE);
g_MouseCursors[ImGuiMouseCursor_Arrow] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
g_MouseCursors[ImGuiMouseCursor_TextInput] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM);
g_MouseCursors[ImGuiMouseCursor_ResizeAll] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEALL);
g_MouseCursors[ImGuiMouseCursor_ResizeNS] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENS);
g_MouseCursors[ImGuiMouseCursor_ResizeEW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEWE);
g_MouseCursors[ImGuiMouseCursor_ResizeNESW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENESW);
g_MouseCursors[ImGuiMouseCursor_ResizeNWSE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENWSE);
#ifdef _WIN32
SDL_SysWMinfo wmInfo;
@ -388,10 +388,13 @@ bool ImGui_ImplSdlGL3_Init(SDL_Window* window)
void ImGui_ImplSdlGL3_Shutdown()
{
ImGui_ImplSdlGL3_InvalidateDeviceObjects();
// Destroy SDL mouse cursors
for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_Count_; cursor_n++)
SDL_FreeCursor(g_SdlCursors[cursor_n]);
SDL_FreeCursor(g_MouseCursors[cursor_n]);
memset(g_MouseCursors, 0, sizeof(g_MouseCursors));
// Destroy OpenGL objects
ImGui_ImplSdlGL3_InvalidateDeviceObjects();
}
void ImGui_ImplSdlGL3_NewFrame(SDL_Window* window)
@ -440,7 +443,7 @@ void ImGui_ImplSdlGL3_NewFrame(SDL_Window* window)
io.MousePos = ImVec2((float)mx, (float)my);
#endif
// Hide OS mouse cursor if ImGui is drawing it
// Update OS/hardware mouse cursor if imgui isn't drawing a software cursor
ImGuiMouseCursor cursor = ImGui::GetMouseCursor();
if (io.MouseDrawCursor || cursor == ImGuiMouseCursor_None)
{
@ -448,7 +451,7 @@ void ImGui_ImplSdlGL3_NewFrame(SDL_Window* window)
}
else
{
SDL_SetCursor(g_SdlCursors[cursor]);
SDL_SetCursor(g_MouseCursors[cursor] ? g_MouseCursors[cursor] : g_MouseCursors[ImGuiMouseCursor_Arrow]);
SDL_ShowCursor(1);
}