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Updated Tips (markdown)

omar 2024-07-02 12:29:16 +02:00
parent 5beb62dae6
commit a5913f2a92

19
Tips.md

@ -7,7 +7,24 @@ Also see [[Debug Tools]].
### Visual debugging
You can use ImDrawList primitives on the foreground drawlist, e.g. `GetForegroundDrawList()->AddRectFilled(...)` to bypass clipping of the current window. Whenever you are working with coordinates, consider displaying it on screen using `AddRect()`, `AddCircle()`, etc.
- `ImGui::DebugDrawCursorPos()`, `ImGui::DebugDrawItemRect()` are a convenient way to easily display the current layout position or previous item geometry.
- You can use ImDrawList primitives on the foreground drawlist, e.g. `GetForegroundDrawList()->AddRectFilled(...)` to bypass clipping of the current window. Whenever you are working with coordinates and unsure of their values, consider displaying them on screen using `AddRect()`, `AddCircle()`, etc.
- Using keyboard modifiers is a convenient way to easily enable/disable something.
```cpp
ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
ImVec2 my_pos= ImGui::GetCursorScreenPos();
if (ImGui::GetIO().KeyShift)
{
ImGui::DebugDrawItemRect(); // Helper to draw a rectangle between GetItemRectMin() and GetItemRectMax()
ImGui::GetForegroundDrawList()->AddCircleFilled(my_pos, 3, IM_COL32(255, 0, 0, 255)); // Draw red circle at position
}
ImGui::Text("Shift held: %d", ImGui::GetIO().KeyShift);
```
![debug_draw](https://github.com/ocornut/imgui/assets/8225057/67ceafc6-cdb0-48ae-9559-8f176871d361)
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