diff --git a/imgui.cpp b/imgui.cpp index a28e5981..a99c3743 100644 --- a/imgui.cpp +++ b/imgui.cpp @@ -5104,6 +5104,47 @@ static ImGuiCol GetWindowBgColorIdxFromFlags(ImGuiWindowFlags flags) return ImGuiCol_WindowBg; } +static void CalcResizePosSizeFromAnyCorner(ImGuiWindow* window, const ImVec2& corner_target, const ImVec2& corner_norm, ImVec2* out_pos, ImVec2* out_size) +{ + ImVec2 pos_min = ImLerp(corner_target, window->Pos, corner_norm); // Expected window upper-left + ImVec2 pos_max = ImLerp(window->Pos + window->Size, corner_target, corner_norm); // Expected window lower-right + ImVec2 size_expected = pos_max - pos_min; + ImVec2 size_constrained = CalcSizeFullWithConstraint(window, size_expected); + *out_pos = pos_min; + if (corner_norm.x == 0.0f) + out_pos->x -= (size_constrained.x - size_expected.x); + if (corner_norm.y == 0.0f) + out_pos->y -= (size_constrained.y - size_expected.y); + *out_size = size_constrained; +} + +struct ImGuiResizeGripDef +{ + ImVec2 CornerPos; + ImVec2 InnerDir; + int AngleMin12, AngleMax12; +}; + +const ImGuiResizeGripDef resize_grip_def[4] = +{ + { ImVec2(1,1), ImVec2(-1,-1), 0, 3 }, // Lower right + { ImVec2(0,1), ImVec2(+1,-1), 3, 6 }, // Lower left + { ImVec2(0,0), ImVec2(+1,+1), 6, 9 }, // Upper left + { ImVec2(1,0), ImVec2(-1,+1), 9,12 }, // Upper right +}; + +static ImRect GetBorderRect(ImGuiWindow* window, int border_n, float perp_padding, float thickness) +{ + ImRect rect = window->Rect(); + if (thickness == 0.0f) rect.Max -= ImVec2(1,1); + if (border_n == 0) return ImRect(rect.Min.x + perp_padding, rect.Min.y, rect.Max.x - perp_padding, rect.Min.y + thickness); + if (border_n == 1) return ImRect(rect.Max.x - thickness, rect.Min.y + perp_padding, rect.Max.x, rect.Max.y - perp_padding); + if (border_n == 2) return ImRect(rect.Min.x + perp_padding, rect.Max.y - thickness, rect.Max.x - perp_padding, rect.Max.y); + if (border_n == 3) return ImRect(rect.Min.x, rect.Min.y + perp_padding, rect.Min.x + thickness, rect.Max.y - perp_padding); + IM_ASSERT(0); + return ImRect(); +} + // Push a new ImGui window to add widgets to. // - A default window called "Debug" is automatically stacked at the beginning of every frame so you can use widgets without explicitly calling a Begin/End pair. // - Begin/End can be called multiple times during the frame with the same window name to append content. @@ -5455,58 +5496,104 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags) } else { - ImU32 resize_col = 0; - const float resize_corner_size = ImMax(g.FontSize * 1.35f, window_rounding + 1.0f + g.FontSize * 0.2f); + // Handle resize for: Resize Grips, Borders, Gamepad + int border_held = -1; + ImU32 resize_grip_col[4] = { 0 }; + const int resize_grip_count = (flags & ImGuiWindowFlags_ResizeFromAnySide) ? 2 : 1; // 4 + const int resize_border_count = (flags & ImGuiWindowFlags_ResizeFromAnySide) ? 4 : 0; + + const float grip_draw_size = (float)(int)ImMax(g.FontSize * 1.35f, window_rounding + 1.0f + g.FontSize * 0.2f); + const float grip_hover_size = (float)(int)(grip_draw_size * 0.75f); if (!(flags & ImGuiWindowFlags_AlwaysAutoResize) && window->AutoFitFramesX <= 0 && window->AutoFitFramesY <= 0 && !(flags & ImGuiWindowFlags_NoResize)) { - // Manual resize - // Using the FlattenChilds button flag, we make the resize button accessible even if we are hovering over a child window - const ImVec2 br = window->Rect().GetBR(); - const ImRect resize_rect(br - ImFloor(ImVec2(resize_corner_size * 0.75f, resize_corner_size * 0.75f)), br); - const ImGuiID resize_id = window->GetID("#RESIZE"); - bool hovered, held; - ButtonBehavior(resize_rect, resize_id, &hovered, &held, ImGuiButtonFlags_FlattenChilds | ImGuiButtonFlags_NoNavFocus); - if (hovered || held) - g.MouseCursor = ImGuiMouseCursor_ResizeNWSE; + ImVec2 pos_target(FLT_MAX, FLT_MAX); + ImVec2 size_target(FLT_MAX, FLT_MAX); - ImVec2 nav_resize_delta(0.0f, 0.0f); - if (g.NavWindowingTarget == window) + // Manual resize grips + PushID("#RESIZE"); + for (int resize_grip_n = 0; resize_grip_n < resize_grip_count; resize_grip_n++) { - nav_resize_delta = GetNavInputAmount2d(0, ImGuiNavReadMode_Down); - if (nav_resize_delta.x != 0.0f || nav_resize_delta.y != 0.0f) + const ImGuiResizeGripDef& grip = resize_grip_def[resize_grip_n]; + const ImVec2 corner = ImLerp(window->Pos, window->Pos + window->Size, grip.CornerPos); + + // Using the FlattenChilds button flag we make the resize button accessible even if we are hovering over a child window + ImRect resize_rect(corner, corner + grip.InnerDir * grip_hover_size); + resize_rect.FixInverted(); + bool hovered, held; + ButtonBehavior(resize_rect, window->GetID((void*)resize_grip_n), &hovered, &held, ImGuiButtonFlags_NoNavFocus); + if (hovered || held) + g.MouseCursor = (resize_grip_n & 1) ? ImGuiMouseCursor_ResizeNESW : ImGuiMouseCursor_ResizeNWSE; + + if (g.HoveredWindow == window && held && g.IO.MouseDoubleClicked[0]) { - nav_resize_delta *= ImFloor(600 * g.IO.DeltaTime * ImMin(g.IO.DisplayFramebufferScale.x, g.IO.DisplayFramebufferScale.y)); - g.NavDisableMouseHover = true; - held = true; // For coloring + // Manual auto-fit when double-clicking + size_target = CalcSizeFullWithConstraint(window, size_auto_fit); + ClearActiveID(); } + else if (held) + { + // Resize from any of the four corners + // We don't use an incremental MouseDelta but rather compute an absolute target size based on mouse position + ImVec2 corner_target = g.IO.MousePos - g.ActiveIdClickOffset + resize_rect.GetSize() * grip.CornerPos; // Corner of the window corresponding to our corner grip + CalcResizePosSizeFromAnyCorner(window, corner_target, grip.CornerPos, &pos_target, &size_target); + } + resize_grip_col[resize_grip_n] = GetColorU32(held ? ImGuiCol_ResizeGripActive : hovered ? ImGuiCol_ResizeGripHovered : ImGuiCol_ResizeGrip); } - - ImVec2 size_target(FLT_MAX,FLT_MAX); - if (g.HoveredWindow == window && held && g.IO.MouseDoubleClicked[0]) + for (int border_n = 0; border_n < resize_border_count; border_n++) { - // Manual auto-fit when double-clicking - size_target = size_auto_fit; - ClearActiveID(); + const float BORDER_SIZE = 5.0f; // FIXME: Only works _inside_ window because of HoveredWindow check. + const float BORDER_APPEAR_TIMER = 0.05f; // Reduce visual noise + bool hovered, held; + ImRect border_rect = GetBorderRect(window, border_n, grip_hover_size, BORDER_SIZE); + ButtonBehavior(border_rect, window->GetID((void*)(border_n+4)), &hovered, &held, ImGuiButtonFlags_FlattenChilds); + if ((hovered && g.HoveredIdTimer > BORDER_APPEAR_TIMER) || held) + { + g.MouseCursor = (border_n & 1) ? ImGuiMouseCursor_ResizeEW : ImGuiMouseCursor_ResizeNS; + if (held) border_held = border_n; + } + if (held) + { + ImVec2 border_target = window->Pos; + ImVec2 border_posn; + if (border_n == 0) { border_posn = ImVec2(0, 0); border_target.y = (g.IO.MousePos.y - g.ActiveIdClickOffset.y); } + if (border_n == 1) { border_posn = ImVec2(1, 0); border_target.x = (g.IO.MousePos.x - g.ActiveIdClickOffset.x + BORDER_SIZE); } + if (border_n == 2) { border_posn = ImVec2(0, 1); border_target.y = (g.IO.MousePos.y - g.ActiveIdClickOffset.y + BORDER_SIZE); } + if (border_n == 3) { border_posn = ImVec2(0, 0); border_target.x = (g.IO.MousePos.x - g.ActiveIdClickOffset.x); } + CalcResizePosSizeFromAnyCorner(window, border_target, border_posn, &pos_target, &size_target); + } } - else if (nav_resize_delta.x != 0.0f || nav_resize_delta.y != 0.0f) + PopID(); + + // Navigation/gamepad resize + if (g.NavWindowingTarget == window) { - // FIXME-NAVIGATION: Should store and accumulate into a separate size buffer to handle sizing constraints properly - g.NavWindowingToggleLayer = false; - size_target = window->SizeFull + nav_resize_delta; + ImVec2 nav_resize_delta = GetNavInputAmount2d(0, ImGuiNavReadMode_Down); + if (nav_resize_delta.x != 0.0f || nav_resize_delta.y != 0.0f) + { + const float GAMEPAD_RESIZE_SPEED = 600.0f; + nav_resize_delta *= ImFloor(GAMEPAD_RESIZE_SPEED * g.IO.DeltaTime * ImMin(g.IO.DisplayFramebufferScale.x, g.IO.DisplayFramebufferScale.y)); + g.NavDisableMouseHover = true; + resize_grip_col[0] = GetColorU32(ImGuiCol_ResizeGripActive); + if (nav_resize_delta.x != 0.0f || nav_resize_delta.y != 0.0f) + { + // FIXME-NAVIGATION: Should store and accumulate into a separate size buffer to handle sizing constraints properly, right now a constraint will make us stuck. + g.NavWindowingToggleLayer = false; + size_target = CalcSizeFullWithConstraint(window, window->SizeFull + nav_resize_delta); + } + } } - else if (held) + + // Apply back modified position/size to window + if (size_target.x != FLT_MAX) { - // We don't use an incremental MouseDelta but rather compute an absolute target size based on mouse position - size_target = (g.IO.MousePos - g.ActiveIdClickOffset - window->Pos) + resize_rect.GetSize(); + window->SizeFull = size_target; + MarkIniSettingsDirty(window); } - - if (size_target.x != FLT_MAX && size_target.y != FLT_MAX) + if (pos_target.x != FLT_MAX) { - window->SizeFull = CalcSizeFullWithConstraint(window, size_target); + window->Pos = window->PosFloat = ImVec2((float)(int)pos_target.x, (float)(int)pos_target.y); MarkIniSettingsDirty(window); } - - resize_col = GetColorU32(held ? ImGuiCol_ResizeGripActive : hovered ? ImGuiCol_ResizeGripHovered : ImGuiCol_ResizeGrip); window->Size = window->SizeFull; title_bar_rect = window->TitleBarRect(); } @@ -5535,20 +5622,28 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags) if (window->ScrollbarY) Scrollbar(ImGuiLayoutType_Vertical); - // Render resize grip - // (after the input handling so we don't have a frame of latency) + // Render resize grips (after their input handling so we don't have a frame of latency) if (!(flags & ImGuiWindowFlags_NoResize)) { - const ImVec2 br = window->Rect().GetBR(); - window->DrawList->PathLineTo(br + ImVec2(-resize_corner_size, -window_border_size)); - window->DrawList->PathLineTo(br + ImVec2(-window_border_size, -resize_corner_size)); - window->DrawList->PathArcToFast(ImVec2(br.x - window_rounding - window_border_size, br.y - window_rounding - window_border_size), window_rounding, 0, 3); - window->DrawList->PathFillConvex(resize_col); + for (int resize_grip_n = 0; resize_grip_n < resize_grip_count; resize_grip_n++) + { + const ImGuiResizeGripDef& grip = resize_grip_def[resize_grip_n]; + const ImVec2 corner = ImLerp(window->Pos, window->Pos + window->Size, grip.CornerPos); + window->DrawList->PathLineTo(corner + grip.InnerDir * ((resize_grip_n & 1) ? ImVec2(window_border_size, grip_draw_size) : ImVec2(grip_draw_size, window_border_size))); + window->DrawList->PathLineTo(corner + grip.InnerDir * ((resize_grip_n & 1) ? ImVec2(grip_draw_size, window_border_size) : ImVec2(window_border_size, grip_draw_size))); + window->DrawList->PathArcToFast(ImVec2(corner.x + grip.InnerDir.x * (window_rounding + window_border_size), corner.y + grip.InnerDir.y * (window_rounding + window_border_size)), window_rounding, grip.AngleMin12, grip.AngleMax12); + window->DrawList->PathFillConvex(resize_grip_col[resize_grip_n]); + } } // Borders if (window_border_size > 0.0f) window->DrawList->AddRect(window->Pos, window->Pos+window->Size, GetColorU32(ImGuiCol_Border), window_rounding, ImDrawCornerFlags_All, window_border_size); + if (border_held != -1) + { + ImRect border = GetBorderRect(window, border_held, grip_draw_size, 0.0f); + window->DrawList->AddLine(border.Min, border.Max, GetColorU32(ImGuiCol_SeparatorActive), ImMax(1.0f, window_border_size)); + } if (style.FrameBorderSize > 0 && !(flags & ImGuiWindowFlags_NoTitleBar)) window->DrawList->AddLine(title_bar_rect.GetBL()+ImVec2(1,-1), title_bar_rect.GetBR()+ImVec2(-1,-1), GetColorU32(ImGuiCol_Border), style.FrameBorderSize); } diff --git a/imgui.h b/imgui.h index 57aaf6d6..1559e6a9 100644 --- a/imgui.h +++ b/imgui.h @@ -524,9 +524,11 @@ enum ImGuiWindowFlags_ ImGuiWindowFlags_AlwaysVerticalScrollbar= 1 << 14, // Always show vertical scrollbar (even if ContentSize.y < Size.y) ImGuiWindowFlags_AlwaysHorizontalScrollbar=1<< 15, // Always show horizontal scrollbar (even if ContentSize.x < Size.x) ImGuiWindowFlags_AlwaysUseWindowPadding = 1 << 16, // Ensure child windows without border uses style.WindowPadding (ignored by default for non-bordered child windows, because more convenient) - ImGuiWindowFlags_NoNavFocus = 1 << 17, // No focusing of this window with gamepad/keyboard navigation - ImGuiWindowFlags_NoNavInputs = 1 << 18, // No gamepad/keyboard navigation within the window - //ImGuiWindowFlags_NavFlattened = 1 << 19, // Allow gamepad/keyboard navigation to cross over parent border to this child (only use on child that have no scrolling!) + ImGuiWindowFlags_ResizeFromAnySide = 1 << 17, // (WIP) Enable resize from any corners and borders. Your back-end needs to honor the different values of io.MouseCursor set by imgui. + ImGuiWindowFlags_NoNavFocus = 1 << 18, // No focusing of this window with gamepad/keyboard navigation + ImGuiWindowFlags_NoNavInputs = 1 << 19, // No gamepad/keyboard navigation within the window + //ImGuiWindowFlags_NavFlattened = 1 << 20, // Allow gamepad/keyboard navigation to cross over parent border to this child (only use on child that have no scrolling!) + // [Internal] ImGuiWindowFlags_ChildWindow = 1 << 22, // Don't use! For internal use by BeginChild() ImGuiWindowFlags_ComboBox = 1 << 23, // Don't use! For internal use by ComboBox() diff --git a/imgui_internal.h b/imgui_internal.h index 75445d6d..ac657023 100644 --- a/imgui_internal.h +++ b/imgui_internal.h @@ -300,6 +300,7 @@ struct IMGUI_API ImRect void Translate(const ImVec2& v) { Min.x += v.x; Min.y += v.y; Max.x += v.x; Max.y += v.y; } void ClipWith(const ImRect& clip) { if (Min.x < clip.Min.x) Min.x = clip.Min.x; if (Min.y < clip.Min.y) Min.y = clip.Min.y; if (Max.x > clip.Max.x) Max.x = clip.Max.x; if (Max.y > clip.Max.y) Max.y = clip.Max.y; } void Floor() { Min.x = (float)(int)Min.x; Min.y = (float)(int)Min.y; Max.x = (float)(int)Max.x; Max.y = (float)(int)Max.y; } + void FixInverted() { if (Min.x > Max.x) ImSwap(Min.x, Max.x); if (Min.y > Max.y) ImSwap(Min.y, Max.y); } bool IsFinite() const { return Min.x != FLT_MAX; } ImVec2 GetClosestPoint(ImVec2 p, bool on_edge) const {