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Added CaptureInputsFromApp() to manually enforce e.g. keyboard capturing

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This commit is contained in:
ocornut 2015-07-02 09:10:31 -06:00
parent eaaab0120a
commit 77fad80e9f
2 changed files with 18 additions and 3 deletions
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18
imgui.cpp
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@ -1333,6 +1333,8 @@ struct ImGuiState
float FramerateSecPerFrame[120]; // calculate estimate of framerate for user
int FramerateSecPerFrameIdx;
float FramerateSecPerFrameAccum;
bool CaptureMouseNextFrame; // explicit capture via CaptureInputs() sets those flags
bool CaptureKeyboardNextFrame;
char TempBuffer[1024*3+1]; // temporary text buffer
ImGuiState()
@ -1394,6 +1396,7 @@ struct ImGuiState
memset(FramerateSecPerFrame, 0, sizeof(FramerateSecPerFrame));
FramerateSecPerFrameIdx = 0;
FramerateSecPerFrameAccum = 0.0f;
CaptureMouseNextFrame = CaptureKeyboardNextFrame = false;
}
};
@ -2189,9 +2192,10 @@ void ImGui::NewFrame()
mouse_earliest_button_down = i;
}
bool mouse_owned_by_application = mouse_earliest_button_down != -1 && !g.IO.MouseDownOwned[mouse_earliest_button_down];
g.IO.WantCaptureMouse = (!mouse_owned_by_application && g.HoveredWindow != NULL) || (!mouse_owned_by_application && mouse_any_down) || (g.ActiveId != 0) || (!g.OpenedPopupStack.empty());
g.IO.WantCaptureKeyboard = (g.ActiveId != 0);
g.IO.WantCaptureMouse = (!mouse_owned_by_application && g.HoveredWindow != NULL) || (!mouse_owned_by_application && mouse_any_down) || (g.ActiveId != 0) || (!g.OpenedPopupStack.empty()) || (g.CaptureMouseNextFrame);
g.IO.WantCaptureKeyboard = (g.ActiveId != 0) || (g.CaptureKeyboardNextFrame);
g.MouseCursor = ImGuiMouseCursor_Arrow;
g.CaptureMouseNextFrame = g.CaptureKeyboardNextFrame = false;
// If mouse was first clicked outside of ImGui bounds we also cancel out hovering.
if (mouse_owned_by_application)
@ -3003,6 +3007,12 @@ void ImGui::SetMouseCursor(ImGuiMouseCursor cursor_type)
GImGui->MouseCursor = cursor_type;
}
void ImGui::CaptureInputsFromApp(bool capture_mouse, bool capture_keyboard)
{
GImGui->CaptureMouseNextFrame |= capture_mouse;
GImGui->CaptureKeyboardNextFrame |= capture_keyboard;
}
bool ImGui::IsItemHovered()
{
ImGuiWindow* window = GetCurrentWindow();
@ -11857,6 +11867,10 @@ void ImGui::ShowTestWindow(bool* opened)
ImGui::Text("WantCaptureMouse: %s", io.WantCaptureMouse ? "true" : "false");
ImGui::Text("WantCaptureKeyboard: %s", io.WantCaptureKeyboard ? "true" : "false");
ImGui::Button("Hover me\nto enforce\ninputs capture");
if (ImGui::IsItemHovered())
ImGui::CaptureInputsFromApp();
ImGui::TreePop();
}

3
imgui.h
View File

@ -382,9 +382,10 @@ namespace ImGui
IMGUI_API bool IsMouseDragging(int button = 0, float lock_threshold = -1.0f); // is mouse dragging. if lock_threshold < -1.0f uses io.MouseDraggingThreshold
IMGUI_API ImVec2 GetMousePos(); // shortcut to ImGui::GetIO().MousePos provided by user, to be consistent with other calls
IMGUI_API ImVec2 GetMouseDragDelta(int button = 0, float lock_threshold = -1.0f); // dragging amount since clicking, also see: GetItemActiveDragDelta(). if lock_threshold < -1.0f uses io.MouseDraggingThreshold
IMGUI_API void ResetMouseDragDelta(int button = 0);
IMGUI_API void ResetMouseDragDelta(int button = 0); //
IMGUI_API ImGuiMouseCursor GetMouseCursor(); // get desired cursor type, reset in ImGui::NewFrame(), this updated during the frame. valid before Render(). If you use software rendering by setting io.MouseDrawCursor ImGui will render those for you
IMGUI_API void SetMouseCursor(ImGuiMouseCursor type); // set desired cursor type
IMGUI_API void CaptureInputsFromApp(bool mouse = true, bool keyboard = true); // manually enforce imgui setting the io.WantCaptureMouse / io.WantCaptureKeyboard flags next frame (your application needs to handle them). e.g. capture keyboard when your widget is being hovered.
// Helpers functions to access the MemAllocFn/MemFreeFn pointers in ImGui::GetIO()
IMGUI_API void* MemAlloc(size_t sz);