From 93d05ee4f9a565bfff86b3e44e4b765c09a5f76d Mon Sep 17 00:00:00 2001 From: ocornut Date: Mon, 12 Oct 2026 19:36:20 +0200 Subject: [PATCH] Adding slider thickness (rebased 2026/10/12) (3599) --- imgui.cpp | 2 ++ imgui.h | 2 ++ imgui_demo.cpp | 7 ++++++- imgui_widgets.cpp | 22 ++++++++++++++++++---- 4 files changed, 28 insertions(+), 5 deletions(-) diff --git a/imgui.cpp b/imgui.cpp index 081938f8a..5ba1531eb 100644 --- a/imgui.cpp +++ b/imgui.cpp @@ -1581,6 +1581,7 @@ ImGuiStyle::ImGuiStyle() ScrollbarPadding = 2.0f; // Padding of scrollbar grab within its frame (same for both axes) GrabMinSize = 12.0f; // Minimum width/height of a grab box for slider/scrollbar GrabRounding = 0.0f; // Radius of grabs corners rounding. Set to 0.0f to have rectangular slider grabs. + SliderThickness = 1.0f; // Thickness of sliders. Can be set between 0.0f (rectangle width is null) and 1.0f (full rectangle is drawn). SliderContrast = 0.5f; // Contrast between the left and right sides of the slider track. LogSliderDeadzone = 4.0f; // The size in pixels of the dead-zone around zero on logarithmic sliders that cross zero. ImageRounding = 0.0f; // Rounding of Image() calls. @@ -3792,6 +3793,7 @@ static const ImGuiStyleVarInfo GStyleVarsInfo[] = { 1, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, ScrollbarPadding) }, // ImGuiStyleVar_ScrollbarPadding { 1, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, GrabMinSize) }, // ImGuiStyleVar_GrabMinSize { 1, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, GrabRounding) }, // ImGuiStyleVar_GrabRounding + { 1, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, SliderThickness) }, // ImGuiStyleVar_SliderThickness { 1, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, SliderContrast) }, // ImGuiStyleVar_SliderContrast { 1, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, ImageRounding) }, // ImGuiStyleVar_ImageRounding { 1, ImGuiDataType_Float, (ImU32)offsetof(ImGuiStyle, ImageBorderSize) }, // ImGuiStyleVar_ImageBorderSize diff --git a/imgui.h b/imgui.h index ebab6f790..104537b41 100644 --- a/imgui.h +++ b/imgui.h @@ -1878,6 +1878,7 @@ enum ImGuiStyleVar_ ImGuiStyleVar_ScrollbarSize, // float ScrollbarSize ImGuiStyleVar_ScrollbarRounding, // float ScrollbarRounding ImGuiStyleVar_ScrollbarPadding, // float ScrollbarPadding + ImGuiStyleVar_SliderThickness, // float SliderThickness ImGuiStyleVar_SliderContrast, // float SliderContrast ImGuiStyleVar_GrabMinSize, // float GrabMinSize ImGuiStyleVar_GrabRounding, // float GrabRounding @@ -2361,6 +2362,7 @@ struct ImGuiStyle float ScrollbarPadding; // Padding of scrollbar grab within its frame (same for both axes). float GrabMinSize; // Minimum width/height of a grab box for slider/scrollbar. float GrabRounding; // Radius of grabs corners rounding. Set to 0.0f to have rectangular slider grabs. + float SliderThickness; // Thickness of sliders. Can be set between 0.0f (rectangle width is null) and 1.0f (full rectangle is drawn), float SliderContrast; // Contrast between the left and right sides of the slider track. float LogSliderDeadzone; // The size in pixels of the dead-zone around zero on logarithmic sliders that cross zero. float ImageRounding; // Rounding of Image() calls. diff --git a/imgui_demo.cpp b/imgui_demo.cpp index 069eb5550..6d3274139 100644 --- a/imgui_demo.cpp +++ b/imgui_demo.cpp @@ -4495,6 +4495,10 @@ static void DemoWindowWidgetsVerticalSliders() const float spacing = 4; ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(spacing, spacing)); + static float sliderThickness = 0.25f; + ImGui::SliderFloat("Slider Thickness", &sliderThickness, 0.0f, 1.0f, "%.2f"); + ImGui::PushStyleVar(ImGuiStyleVar_SliderThickness, sliderThickness); + static int int_value = 0; ImGui::VSliderInt("##int", ImVec2(18, 160), &int_value, 0, 5); ImGui::SameLine(); @@ -4551,7 +4555,7 @@ static void DemoWindowWidgetsVerticalSliders() ImGui::PopID(); } ImGui::PopID(); - ImGui::PopStyleVar(); + ImGui::PopStyleVar(2); ImGui::TreePop(); } } @@ -8786,6 +8790,7 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref) SliderFloat("SeparatorTextBorderSize", &style.SeparatorTextBorderSize, 0.0f, 10.0f, "%.0f"); SliderFloat2("SeparatorTextAlign", (float*)&style.SeparatorTextAlign, 0.0f, 1.0f, "%.2f"); SliderFloat2("SeparatorTextPadding", (float*)&style.SeparatorTextPadding, 0.0f, 40.0f, "%.0f"); + SliderFloat("SliderThickness", &style.SliderThickness, 0.0f, 1.0f, "%.2f"); SliderFloat("SliderContrast", &style.SliderContrast, -1.0f, 1.0f, "%.2f"); SliderFloat("LogSliderDeadzone", &style.LogSliderDeadzone, 0.0f, 12.0f, "%.0f"); SliderFloat("ImageRounding", &style.ImageRounding, 0.0f, 12.0f, "%.0f"); diff --git a/imgui_widgets.cpp b/imgui_widgets.cpp index 2704478d7..7b5ba8707 100644 --- a/imgui_widgets.cpp +++ b/imgui_widgets.cpp @@ -3432,10 +3432,17 @@ bool ImGui::SliderScalar(const char* label, ImGuiDataType data_type, void* p_dat MarkItemEdited(id); // Render track + ImRect draw_bb = frame_bb; + if (g.Style.SliderThickness != 1.0f) + { + float shrink_amount = IM_ROUND((frame_bb.Max.y - frame_bb.Min.y) * 0.5f * (1.0f - g.Style.SliderThickness)); + draw_bb.Min.y += shrink_amount; + draw_bb.Max.y -= shrink_amount; + } //RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, false, style.FrameRounding); float mid_x = IM_ROUND(grab_bb.Min.x + (grab_bb.Max.x - grab_bb.Min.x) * 0.50f); - window->DrawList->AddRectFilled(frame_bb.Min, ImVec2(mid_x, frame_bb.Max.y), frame_col, style.FrameRounding, ImDrawFlags_RoundLeft); - window->DrawList->AddRectFilled(ImVec2(mid_x, frame_bb.Min.y), frame_bb.Max, frame_col_after, style.FrameRounding, ImDrawFlags_RoundRight); + window->DrawList->AddRectFilled(draw_bb.Min, ImVec2(mid_x, draw_bb.Max.y), frame_col, style.FrameRounding, ImDrawFlags_RoundLeft); + window->DrawList->AddRectFilled(ImVec2(mid_x, draw_bb.Min.y), draw_bb.Max, frame_col_after, style.FrameRounding, ImDrawFlags_RoundRight); if (color_marker != 0 && style.ColorMarkerSize > 0.0f) RenderColorComponentMarker(frame_bb, GetColorU32(color_marker), style.FrameRounding); RenderFrameBorder(frame_bb.Min, frame_bb.Max, g.Style.FrameRounding); @@ -3599,10 +3606,17 @@ bool ImGui::VSliderScalar(const char* label, const ImVec2& size, ImGuiDataType d MarkItemEdited(id); // Render track + ImRect draw_bb = frame_bb; + if (g.Style.SliderThickness != 1.0f) + { + float shrink_amount = (float)(int)((frame_bb.Max.x - frame_bb.Min.x) * 0.5f * (1.0f - g.Style.SliderThickness)); + draw_bb.Min.x += shrink_amount; + draw_bb.Max.x -= shrink_amount; + } //RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, g.Style.FrameRounding); float mid_y = IM_ROUND(grab_bb.Max.y - (grab_bb.Max.y - grab_bb.Min.y) * 0.50f); - window->DrawList->AddRectFilled(ImVec2(frame_bb.Min.x, mid_y), frame_bb.Max, frame_col, style.FrameRounding, ImDrawFlags_RoundBottom); - window->DrawList->AddRectFilled(frame_bb.Min, ImVec2(frame_bb.Max.x, mid_y), frame_col_after, style.FrameRounding, ImDrawFlags_RoundTop); + window->DrawList->AddRectFilled(ImVec2(draw_bb.Min.x, mid_y), draw_bb.Max, frame_col, style.FrameRounding, ImDrawFlags_RoundBottom); + window->DrawList->AddRectFilled(draw_bb.Min, ImVec2(draw_bb.Max.x, mid_y), frame_col_after, style.FrameRounding, ImDrawFlags_RoundTop); // Render grab if (grab_bb.Max.y > grab_bb.Min.y)