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Internals: Added SplitterBehavior(). (#319)

This commit is contained in:
omar 2017-11-20 19:39:27 +01:00
parent 195abc3d17
commit 302757447a
2 changed files with 57 additions and 0 deletions
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49
imgui.cpp
View File

@ -10184,6 +10184,55 @@ void ImGui::VerticalSeparator()
LogText(" |");
}
bool ImGui::SplitterBehavior(ImGuiID id, const ImRect& bb, ImGuiAxis axis, float* size1, float* size2, float min_size1, float min_size2, float hover_extend)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
const ImGuiItemFlags item_flags_backup = window->DC.ItemFlags;
#ifdef IMGUI_HAS_NAV
window->DC.ItemFlags |= ImGuiItemFlags_NoNav | ImGuiItemFlags_NoNavDefaultFocus;
#endif
bool add = ItemAdd(bb, id);
window->DC.ItemFlags = item_flags_backup;
if (!add)
return false;
bool hovered, held;
ImRect bb_interact = bb;
bb_interact.Expand(axis == ImGuiAxis_Y ? ImVec2(0.0f, hover_extend) : ImVec2(hover_extend, 0.0f));
ButtonBehavior(bb_interact, id, &hovered, &held, ImGuiButtonFlags_FlattenChilds | ImGuiButtonFlags_AllowOverlapMode);
if (g.ActiveId != id)
SetItemAllowOverlap();
if (held || (g.HoveredId == id && g.HoveredIdPreviousFrame == id))
SetMouseCursor(axis == ImGuiAxis_Y ? ImGuiMouseCursor_ResizeNS : ImGuiMouseCursor_ResizeEW);
ImRect bb_render = bb;
if (held)
{
ImVec2 mouse_delta_2d = g.IO.MousePos - g.ActiveIdClickOffset - bb_interact.Min;
float mouse_delta = (axis == ImGuiAxis_Y) ? mouse_delta_2d.y : mouse_delta_2d.x;
// Minimum pane size
if (mouse_delta < min_size1 - *size1)
mouse_delta = min_size1 - *size1;
if (mouse_delta > *size2 - min_size2)
mouse_delta = *size2 - min_size2;
// Apply resize
*size1 += mouse_delta;
*size2 -= mouse_delta;
bb_render.Translate((axis == ImGuiAxis_X) ? ImVec2(mouse_delta, 0.0f) : ImVec2(0.0f, mouse_delta));
}
// Render
const ImU32 col = GetColorU32(held ? ImGuiCol_SeparatorActive : hovered ? ImGuiCol_SeparatorHovered : ImGuiCol_Separator);
RenderFrame(bb_render.Min, bb_render.Max, col, true, g.Style.FrameRounding);
return held;
}
void ImGui::Spacing()
{
ImGuiWindow* window = GetCurrentWindow();

8
imgui_internal.h
View File

@ -221,6 +221,13 @@ enum ImGuiLayoutType_
ImGuiLayoutType_Horizontal
};
enum ImGuiAxis
{
ImGuiAxis_None = -1,
ImGuiAxis_X = 0,
ImGuiAxis_Y = 1,
};
enum ImGuiPlotType
{
ImGuiPlotType_Lines,
@ -807,6 +814,7 @@ namespace ImGui
IMGUI_API void Scrollbar(ImGuiLayoutType direction);
IMGUI_API void VerticalSeparator(); // Vertical separator, for menu bars (use current line height). not exposed because it is misleading what it doesn't have an effect on regular layout.
IMGUI_API bool SplitterBehavior(ImGuiID id, const ImRect& bb, ImGuiAxis axis, float* size1, float* size2, float min_size1, float min_size2, float hover_extend = 0.0f);
// FIXME-WIP: New Columns API
IMGUI_API void BeginColumns(const char* id, int count, ImGuiColumnsFlags flags = 0); // setup number of columns. use an identifier to distinguish multiple column sets. close with EndColumns().