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Selectable: add support for specifying text alignment on selectables (#2347)
Adds a style variable to Selectable that allows clients to specify the text alignment within Selectables, adds a section in the demo to demonstrate selectable text alignment, and a pair of sliders in the style editor to change selectable alignment on the fly. In terms of implementation, this one is extremely simple: Selectable was already calling an API that supports text alignment, but had hard-coded it to top-left. This changes that to just pass the style variable straight through to RenderTextClipped. Backwards-compatibility is preserved by defaulting the text_align parameter to (0, 0), i.e., top-left. This also fixes a bug with selectable text rendering that caused right-aligned text in a selectable to be clipped incorrectly, because the wrong clipping rectangle was being used.
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parent
93d1179805
commit
b277cfffc8
46
imgui.cpp
46
imgui.cpp
@ -1109,6 +1109,7 @@ ImGuiStyle::ImGuiStyle()
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AntiAliasedLines = true; // Enable anti-aliasing on lines/borders. Disable if you are really short on CPU/GPU.
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AntiAliasedFill = true; // Enable anti-aliasing on filled shapes (rounded rectangles, circles, etc.)
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CurveTessellationTol = 1.25f; // Tessellation tolerance when using PathBezierCurveTo() without a specific number of segments. Decrease for highly tessellated curves (higher quality, more polygons), increase to reduce quality.
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SelectableTextAlign = ImVec2(0,0); // Alignment of selectable text when button is larger than text.
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// Default theme
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ImGui::StyleColorsDark(this);
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@ -5794,28 +5795,29 @@ struct ImGuiStyleVarInfo
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static const ImGuiStyleVarInfo GStyleVarInfo[] =
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{
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, Alpha) }, // ImGuiStyleVar_Alpha
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{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImGuiStyle, WindowPadding) }, // ImGuiStyleVar_WindowPadding
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, WindowRounding) }, // ImGuiStyleVar_WindowRounding
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, WindowBorderSize) }, // ImGuiStyleVar_WindowBorderSize
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{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImGuiStyle, WindowMinSize) }, // ImGuiStyleVar_WindowMinSize
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{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImGuiStyle, WindowTitleAlign) }, // ImGuiStyleVar_WindowTitleAlign
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, ChildRounding) }, // ImGuiStyleVar_ChildRounding
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, ChildBorderSize) }, // ImGuiStyleVar_ChildBorderSize
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, PopupRounding) }, // ImGuiStyleVar_PopupRounding
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, PopupBorderSize) }, // ImGuiStyleVar_PopupBorderSize
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{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImGuiStyle, FramePadding) }, // ImGuiStyleVar_FramePadding
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, FrameRounding) }, // ImGuiStyleVar_FrameRounding
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, FrameBorderSize) }, // ImGuiStyleVar_FrameBorderSize
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{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImGuiStyle, ItemSpacing) }, // ImGuiStyleVar_ItemSpacing
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{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImGuiStyle, ItemInnerSpacing) }, // ImGuiStyleVar_ItemInnerSpacing
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, IndentSpacing) }, // ImGuiStyleVar_IndentSpacing
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, ScrollbarSize) }, // ImGuiStyleVar_ScrollbarSize
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, ScrollbarRounding) }, // ImGuiStyleVar_ScrollbarRounding
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, GrabMinSize) }, // ImGuiStyleVar_GrabMinSize
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, GrabRounding) }, // ImGuiStyleVar_GrabRounding
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, TabRounding) }, // ImGuiStyleVar_TabRounding
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{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImGuiStyle, ButtonTextAlign) }, // ImGuiStyleVar_ButtonTextAlign
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, Alpha) }, // ImGuiStyleVar_Alpha
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{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImGuiStyle, WindowPadding) }, // ImGuiStyleVar_WindowPadding
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, WindowRounding) }, // ImGuiStyleVar_WindowRounding
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, WindowBorderSize) }, // ImGuiStyleVar_WindowBorderSize
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{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImGuiStyle, WindowMinSize) }, // ImGuiStyleVar_WindowMinSize
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{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImGuiStyle, WindowTitleAlign) }, // ImGuiStyleVar_WindowTitleAlign
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, ChildRounding) }, // ImGuiStyleVar_ChildRounding
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, ChildBorderSize) }, // ImGuiStyleVar_ChildBorderSize
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, PopupRounding) }, // ImGuiStyleVar_PopupRounding
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, PopupBorderSize) }, // ImGuiStyleVar_PopupBorderSize
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{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImGuiStyle, FramePadding) }, // ImGuiStyleVar_FramePadding
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, FrameRounding) }, // ImGuiStyleVar_FrameRounding
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, FrameBorderSize) }, // ImGuiStyleVar_FrameBorderSize
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{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImGuiStyle, ItemSpacing) }, // ImGuiStyleVar_ItemSpacing
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{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImGuiStyle, ItemInnerSpacing) }, // ImGuiStyleVar_ItemInnerSpacing
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, IndentSpacing) }, // ImGuiStyleVar_IndentSpacing
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, ScrollbarSize) }, // ImGuiStyleVar_ScrollbarSize
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, ScrollbarRounding) }, // ImGuiStyleVar_ScrollbarRounding
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, GrabMinSize) }, // ImGuiStyleVar_GrabMinSize
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, GrabRounding) }, // ImGuiStyleVar_GrabRounding
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{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImGuiStyle, TabRounding) }, // ImGuiStyleVar_TabRounding
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{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImGuiStyle, ButtonTextAlign) }, // ImGuiStyleVar_ButtonTextAlign
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{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImGuiStyle, SelectableTextAlign) }, // ImGuiStyleVar_SelectableTextAlign
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};
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static const ImGuiStyleVarInfo* GetStyleVarInfo(ImGuiStyleVar idx)
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2
imgui.h
2
imgui.h
@ -1082,6 +1082,7 @@ enum ImGuiStyleVar_
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ImGuiStyleVar_GrabRounding, // float GrabRounding
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ImGuiStyleVar_TabRounding, // float TabRounding
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ImGuiStyleVar_ButtonTextAlign, // ImVec2 ButtonTextAlign
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ImGuiStyleVar_SelectableTextAlign, // ImVec2 SelectableTextAlign
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ImGuiStyleVar_COUNT
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// Obsolete names (will be removed)
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@ -1263,6 +1264,7 @@ struct ImGuiStyle
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bool AntiAliasedLines; // Enable anti-aliasing on lines/borders. Disable if you are really tight on CPU/GPU.
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bool AntiAliasedFill; // Enable anti-aliasing on filled shapes (rounded rectangles, circles, etc.)
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float CurveTessellationTol; // Tessellation tolerance when using PathBezierCurveTo() without a specific number of segments. Decrease for highly tessellated curves (higher quality, more polygons), increase to reduce quality.
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ImVec2 SelectableTextAlign; // Alignment of selectable text when selectable is larger than text. Defaults to (0,0) for top-left alignment.
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ImVec4 Colors[ImGuiCol_COUNT];
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IMGUI_API ImGuiStyle();
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@ -893,6 +893,25 @@ static void ShowDemoWindowWidgets()
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}
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ImGui::TreePop();
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}
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if (ImGui::TreeNode("Alignment"))
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{
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static bool selected[3*3] = { true, false, true, false, true, false, true, false, true };
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static char name[16];
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for (int i = 0; i < 3; i++)
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{
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for (int j = 0; j < 3; j++)
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{
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float x = (float) i / 2.f;
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float y = (float) j / 2.f;
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snprintf(name, IM_ARRAYSIZE(name), "(%.1f,%.1f)", x, y);
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ImGui::PushStyleVar(ImGuiStyleVar_SelectableTextAlign, ImVec2(x, y));
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ImGui::Selectable(name, &selected[3*i+j], 0, ImVec2(70,70));
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ImGui::PopStyleVar();
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if (j != 2) ImGui::SameLine();
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}
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}
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ImGui::TreePop();
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}
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ImGui::TreePop();
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}
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@ -2825,6 +2844,7 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
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ImGui::Text("Alignment");
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ImGui::SliderFloat2("WindowTitleAlign", (float*)&style.WindowTitleAlign, 0.0f, 1.0f, "%.2f");
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ImGui::SliderFloat2("ButtonTextAlign", (float*)&style.ButtonTextAlign, 0.0f, 1.0f, "%.2f"); ImGui::SameLine(); ShowHelpMarker("Alignment applies when a button is larger than its text content.");
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ImGui::SliderFloat2("SelectableTextAlign", (float*)&style.SelectableTextAlign, 0.0f, 1.0f, "%.2f"); ImGui::SameLine(); ShowHelpMarker("Alignment applies when a selectable is larger than its text content.");
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ImGui::Text("Safe Area Padding"); ImGui::SameLine(); ShowHelpMarker("Adjust if you cannot see the edges of your screen (e.g. on a TV where scaling has not been configured).");
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ImGui::SliderFloat2("DisplaySafeAreaPadding", (float*)&style.DisplaySafeAreaPadding, 0.0f, 30.0f, "%.0f");
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ImGui::EndTabItem();
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@ -5100,7 +5100,7 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
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}
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if (flags & ImGuiSelectableFlags_Disabled) PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
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RenderTextClipped(bb_inner.Min, bb.Max, label, NULL, &label_size, ImVec2(0.0f,0.0f));
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RenderTextClipped(bb_inner.Min, bb_inner.Max, label, NULL, &label_size, style.SelectableTextAlign, &bb);
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if (flags & ImGuiSelectableFlags_Disabled) PopStyleColor();
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// Automatically close popups
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