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Add minimize/maximize window flags

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TODO: actual work of rendering window
This commit is contained in:
Andersama 2024-09-06 08:51:26 -07:00
parent a2366f9022
commit dd15544751
4 changed files with 143 additions and 0 deletions
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72
imgui_widgets.cpp
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@ -863,6 +863,78 @@ bool ImGui::CloseButton(ImGuiID id, const ImVec2& pos)
return pressed;
}
// Button to close a window
bool ImGui::MinimizeButton(ImGuiID id, const ImVec2& pos, bool minimized)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
// Tweak 1: Shrink hit-testing area if button covers an abnormally large proportion of the visible region. That's in order to facilitate moving the window away. (#3825)
// This may better be applied as a general hit-rect reduction mechanism for all widgets to ensure the area to move window is always accessible?
const ImRect bb(pos, pos + ImVec2(g.FontSize, g.FontSize));
ImRect bb_interact = bb;
const float area_to_visible_ratio = window->OuterRectClipped.GetArea() / bb.GetArea();
if (area_to_visible_ratio < 1.5f)
bb_interact.Expand(ImTrunc(bb_interact.GetSize() * -0.25f));
// Tweak 2: We intentionally allow interaction when clipped so that a mechanical Alt,Right,Activate sequence can always close a window.
// (this isn't the common behavior of buttons, but it doesn't affect the user because navigation tends to keep items visible in scrolling layer).
bool is_clipped = !ItemAdd(bb_interact, id);
bool hovered, held;
bool pressed = ButtonBehavior(bb_interact, id, &hovered, &held);
if (is_clipped)
return pressed;
// Render
ImU32 bg_col = GetColorU32(held ? ImGuiCol_ButtonActive : ImGuiCol_ButtonHovered);
if (hovered)
window->DrawList->AddRectFilled(bb.Min, bb.Max, bg_col);
RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_Compact);
ImU32 cross_col = GetColorU32(ImGuiCol_Text);
ImVec2 cross_center = bb.GetCenter() - ImVec2(0.5f, 0.5f);
float cross_extent = g.FontSize * 0.5f * 0.7071f - 1.0f;
window->DrawList->AddLine(cross_center + ImVec2(+cross_extent, 0.0f), cross_center + ImVec2(-cross_extent, 0.0f), cross_col, 1.0f);
return pressed;
}
// Button to close a window
bool ImGui::MaximizeButton(ImGuiID id, const ImVec2& pos, bool maximized)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
// Tweak 1: Shrink hit-testing area if button covers an abnormally large proportion of the visible region. That's in order to facilitate moving the window away. (#3825)
// This may better be applied as a general hit-rect reduction mechanism for all widgets to ensure the area to move window is always accessible?
const ImRect bb(pos, pos + ImVec2(g.FontSize, g.FontSize));
ImRect bb_interact = bb;
const float area_to_visible_ratio = window->OuterRectClipped.GetArea() / bb.GetArea();
if (area_to_visible_ratio < 1.5f)
bb_interact.Expand(ImTrunc(bb_interact.GetSize() * -0.25f));
// Tweak 2: We intentionally allow interaction when clipped so that a mechanical Alt,Right,Activate sequence can always close a window.
// (this isn't the common behavior of buttons, but it doesn't affect the user because navigation tends to keep items visible in scrolling layer).
bool is_clipped = !ItemAdd(bb_interact, id);
bool hovered, held;
bool pressed = ButtonBehavior(bb_interact, id, &hovered, &held);
if (is_clipped)
return pressed;
// Render
ImU32 bg_col = GetColorU32(held ? ImGuiCol_ButtonActive : ImGuiCol_ButtonHovered);
if (hovered)
window->DrawList->AddRectFilled(bb.Min, bb.Max, bg_col);
RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_Compact);
ImU32 cross_col = GetColorU32(ImGuiCol_Text);
ImVec2 cross_center = bb.GetCenter() - ImVec2(0.5f, 0.5f);
float cross_extent = g.FontSize * 0.5f * 0.7071f - 1.0f;
window->DrawList->AddRect(cross_center + ImVec2(-cross_extent, -cross_extent), cross_center + ImVec2( + cross_extent, + cross_extent), cross_col, 0.0f, 0, 1.0f);
return pressed;
}
bool ImGui::CollapseButton(ImGuiID id, const ImVec2& pos)
{
ImGuiContext& g = *GImGui;