Demo: Re-ordered example app code to match their menu order and forward declaration order + added header to delimitate them.
diff --git a/imgui_demo.cpp b/imgui_demo.cpp
index f33a3a4..08f924f 100644
--- a/imgui_demo.cpp
+++ b/imgui_demo.cpp
@@ -77,6 +77,7 @@
#if !defined(IMGUI_DISABLE_DEMO_WINDOWS)
// Forward Declarations
+static void ShowExampleAppMainMenuBar();
static void ShowExampleAppConsole(bool* p_open);
static void ShowExampleAppLog(bool* p_open);
static void ShowExampleAppLayout(bool* p_open);
@@ -87,7 +88,6 @@
static void ShowExampleAppSimpleOverlay(bool* p_open);
static void ShowExampleAppWindowTitles(bool* p_open);
static void ShowExampleAppCustomRendering(bool* p_open);
-static void ShowExampleAppMainMenuBar();
static void ShowExampleMenuFile();
// Helper to display a little (?) mark which shows a tooltip when hovered.
@@ -2252,6 +2252,7 @@
}
}
+ // End of ShowDemoWindow()
ImGui::End();
}
@@ -2517,6 +2518,10 @@
ImGui::PopItemWidth();
}
+//-----------------------------------------------------------------------------
+// EXAMPLE APP CODE: MAIN MENU BAR
+//-----------------------------------------------------------------------------
+
// Demonstrate creating a fullscreen menu bar and populating it.
static void ShowExampleAppMainMenuBar()
{
@@ -2606,235 +2611,9 @@
if (ImGui::MenuItem("Quit", "Alt+F4")) {}
}
-// 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();
-}
-
-// 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();
-}
+//-----------------------------------------------------------------------------
+// EXAMPLE APP CODE: CONSOLE
+//-----------------------------------------------------------------------------
// 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.
@@ -2855,7 +2634,7 @@
Commands.push_back("HELP");
Commands.push_back("HISTORY");
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!");
}
~ExampleAppConsole()
@@ -3143,6 +2922,10 @@
console.Draw("Example: Console", p_open);
}
+//-----------------------------------------------------------------------------
+// EXAMPLE APP CODE: LOG
+//-----------------------------------------------------------------------------
+
// Usage:
// static ExampleAppLog my_log;
// my_log.AddLog("Hello %d world\n", 123);
@@ -3229,6 +3012,10 @@
log.Draw("Example: Log", p_open);
}
+//-----------------------------------------------------------------------------
+// EXAMPLE APP CODE: SIMPLE LAYOUT
+//-----------------------------------------------------------------------------
+
// Demonstrate create a window with multiple child windows.
static void ShowExampleAppLayout(bool* p_open)
{
@@ -3273,6 +3060,10 @@
ImGui::End();
}
+//-----------------------------------------------------------------------------
+// EXAMPLE APP CODE: PROPERTY EDITOR
+//-----------------------------------------------------------------------------
+
// Demonstrate create a simple property editor.
static void ShowExampleAppPropertyEditor(bool* p_open)
{
@@ -3342,6 +3133,10 @@
ImGui::End();
}
+//-----------------------------------------------------------------------------
+// EXAMPLE APP CODE: LONG TEXT
+//-----------------------------------------------------------------------------
+
// Demonstrate/test rendering huge amount of text, and the incidence of clipping.
static void ShowExampleAppLongText(bool* p_open)
{
@@ -3396,6 +3191,256 @@
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
#else
