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CollapsingHeader: When a close button is enabled, better clip the label to avoid overlap. (#600)

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This commit is contained in:
omar 2019-05-28 21:22:18 +02:00
parent c487bc52a2
commit cb7ba60d3f
3 changed files with 16 additions and 5 deletions
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1
docs/CHANGELOG.txt
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@ -51,6 +51,7 @@ Other Changes:
- Fixed crash when appending with BeginMainMenuBar() more than once and no other window are showing. (#2567)
- ColorEdit: Fixed the color picker popup only displaying inputs as HSV instead of showing multiple
options. (#2587, broken in 1.69 by #2384).
- CollapsingHeader: Better clipping when a close button is enabled and it overlaps the label. (#600)
- Scrollbar: Very minor bounding box adjustment to cope with various border size.
- Style: Added style.WindowMenuButtonPosition (left/right, defaults to ImGuiDir_Left) to move the
collapsing/docking button to the other side of the title bar.

6
imgui_internal.h
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@ -361,6 +361,12 @@ enum ImGuiSelectableFlagsPrivate_
ImGuiSelectableFlags_AllowItemOverlap = 1 << 24
};
// Extend ImGuiTreeNodeFlags_
enum ImGuiTreeNodeFlagsPrivate_
{
ImGuiTreeNodeFlags_ClipLabelForTrailingButton = 1 << 20
};
enum ImGuiSeparatorFlags_
{
ImGuiSeparatorFlags_None = 0,

14
imgui_widgets.cpp
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@ -5131,8 +5131,8 @@ bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* l
if (display_frame)
{
// Framed header expand a little outside the default padding
frame_bb.Min.x -= (float)(int)(window->WindowPadding.x*0.5f) - 1;
frame_bb.Max.x += (float)(int)(window->WindowPadding.x*0.5f) - 1;
frame_bb.Min.x -= (float)(int)(window->WindowPadding.x * 0.5f) - 1;
frame_bb.Max.x += (float)(int)(window->WindowPadding.x * 0.5f) - 1;
}
const float text_offset_x = (g.FontSize + (display_frame ? padding.x*3 : padding.x*2)); // Collapser arrow width + Spacing
@ -5229,6 +5229,8 @@ bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* l
RenderFrame(frame_bb.Min, frame_bb.Max, col, true, style.FrameRounding);
RenderNavHighlight(frame_bb, id, nav_highlight_flags);
RenderArrow(frame_bb.Min + ImVec2(padding.x, text_base_offset_y), is_open ? ImGuiDir_Down : ImGuiDir_Right, 1.0f);
if (flags & ImGuiTreeNodeFlags_ClipLabelForTrailingButton)
frame_bb.Max.x -= g.FontSize + style.FramePadding.x;
if (g.LogEnabled)
{
// NB: '##' is normally used to hide text (as a library-wide feature), so we need to specify the text range to make sure the ## aren't stripped out here.
@ -5355,7 +5357,8 @@ bool ImGui::CollapsingHeader(const char* label, bool* p_open, ImGuiTreeNodeFlags
return false;
ImGuiID id = window->GetID(label);
bool is_open = TreeNodeBehavior(id, flags | ImGuiTreeNodeFlags_CollapsingHeader | (p_open ? ImGuiTreeNodeFlags_AllowItemOverlap : 0), label);
flags |= ImGuiTreeNodeFlags_CollapsingHeader | (p_open ? ImGuiTreeNodeFlags_AllowItemOverlap | ImGuiTreeNodeFlags_ClipLabelForTrailingButton : 0);
bool is_open = TreeNodeBehavior(id, flags, label);
if (p_open)
{
// Create a small overlapping close button
@ -5364,8 +5367,9 @@ bool ImGui::CollapsingHeader(const char* label, bool* p_open, ImGuiTreeNodeFlags
ImGuiContext& g = *GImGui;
ImGuiItemHoveredDataBackup last_item_backup;
float button_size = g.FontSize;
ImVec2 button_pos = ImVec2(ImMin(window->DC.LastItemRect.Max.x, window->ClipRect.Max.x) - g.Style.FramePadding.x * 2.0f - button_size, window->DC.LastItemRect.Min.y);
if (CloseButton(window->GetID((void*)((intptr_t)id + 1)), button_pos))
float button_x = ImMax(window->DC.LastItemRect.Min.x, window->DC.LastItemRect.Max.x - g.Style.FramePadding.x * 2.0f - button_size);
float button_y = window->DC.LastItemRect.Min.y;
if (CloseButton(window->GetID((void*)((intptr_t)id + 1)), ImVec2(button_x, button_y)))
*p_open = false;
last_item_backup.Restore();
}