diff --git a/src/raygui.h b/src/raygui.h index 3b807df..0db77e4 100644 --- a/src/raygui.h +++ b/src/raygui.h @@ -1720,8 +1720,12 @@ int GuiTabBar(Rectangle bounds, const char **text, int count, int *active) // Scroll Panel control int GuiScrollPanel(Rectangle bounds, const char *text, Rectangle content, Vector2 *scroll, Rectangle *view) { + #define RAYGUI_MIN_SCROLLBAR_WIDTH 40 + #define RAYGUI_MIN_SCROLLBAR_HEIGHT 40 + int result = 0; GuiState state = guiState; + float mouseWheelSpeed = 20.0f; // Default movement speed with mouse wheel Rectangle temp = { 0 }; if (view == NULL) view = &temp; @@ -1752,6 +1756,19 @@ int GuiScrollPanel(Rectangle bounds, const char *text, Rectangle content, Vector Rectangle horizontalScrollBar = { (float)((GuiGetStyle(LISTVIEW, SCROLLBAR_SIDE) == SCROLLBAR_LEFT_SIDE)? (float)bounds.x + verticalScrollBarWidth : (float)bounds.x) + GuiGetStyle(DEFAULT, BORDER_WIDTH), (float)bounds.y + bounds.height - horizontalScrollBarWidth - GuiGetStyle(DEFAULT, BORDER_WIDTH), (float)bounds.width - verticalScrollBarWidth - 2*GuiGetStyle(DEFAULT, BORDER_WIDTH), (float)horizontalScrollBarWidth }; Rectangle verticalScrollBar = { (float)((GuiGetStyle(LISTVIEW, SCROLLBAR_SIDE) == SCROLLBAR_LEFT_SIDE)? (float)bounds.x + GuiGetStyle(DEFAULT, BORDER_WIDTH) : (float)bounds.x + bounds.width - verticalScrollBarWidth - GuiGetStyle(DEFAULT, BORDER_WIDTH)), (float)bounds.y + GuiGetStyle(DEFAULT, BORDER_WIDTH), (float)verticalScrollBarWidth, (float)bounds.height - horizontalScrollBarWidth - 2*GuiGetStyle(DEFAULT, BORDER_WIDTH) }; + // Make sure scroll bars have a minimum width/height + // NOTE: If content >>> bounds, size could be very small or even 0 + if (horizontalScrollBar.width < RAYGUI_MIN_SCROLLBAR_WIDTH) + { + horizontalScrollBar.width = RAYGUI_MIN_SCROLLBAR_WIDTH; + mouseWheelSpeed = 30.0f; // TODO: Calculate speed increment based on content.height vs bounds.height + } + if (verticalScrollBar.height < RAYGUI_MIN_SCROLLBAR_HEIGHT) + { + verticalScrollBar.height = RAYGUI_MIN_SCROLLBAR_HEIGHT; + mouseWheelSpeed = 30.0f; // TODO: Calculate speed increment based on content.width vs bounds.width + } + // Calculate view area (area without the scrollbars) *view = (GuiGetStyle(LISTVIEW, SCROLLBAR_SIDE) == SCROLLBAR_LEFT_SIDE)? RAYGUI_CLITERAL(Rectangle){ bounds.x + verticalScrollBarWidth + GuiGetStyle(DEFAULT, BORDER_WIDTH), bounds.y + GuiGetStyle(DEFAULT, BORDER_WIDTH), bounds.width - 2*GuiGetStyle(DEFAULT, BORDER_WIDTH) - verticalScrollBarWidth, bounds.height - 2*GuiGetStyle(DEFAULT, BORDER_WIDTH) - horizontalScrollBarWidth } : @@ -1793,9 +1810,9 @@ int GuiScrollPanel(Rectangle bounds, const char *text, Rectangle content, Vector #endif float wheelMove = GetMouseWheelMove(); - // Horizontal scroll ((Left Control or Left Shift) + Mouse wheel) - if (hasHorizontalScrollBar && (IsKeyDown(KEY_LEFT_CONTROL) || IsKeyDown(KEY_LEFT_SHIFT))) scrollPos.x += wheelMove*20; - else scrollPos.y += wheelMove*20; // Vertical scroll + // Horizontal and vertical scrolling with mouse wheel + if (hasHorizontalScrollBar && (IsKeyDown(KEY_LEFT_CONTROL) || IsKeyDown(KEY_LEFT_SHIFT))) scrollPos.x += wheelMove*mouseWheelSpeed; + else scrollPos.y += wheelMove*mouseWheelSpeed; // Vertical scroll } }