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#pragma once
#include <stdbool.h>
#include <stdint.h>
typedef uint8_t uiChannel;
typedef struct uiPixel {
uiChannel r, g, b, a;
} uiPixel;
typedef struct uiSize {
int width;
int height;
} uiSize;
/// A UI surface to which widgets are rendered.
typedef struct uiSurface {
int width;
int height;
uiPixel* pixels;
} uiSurface;
/// Rectangle.
/// (x,y) is the top-left corner.
typedef struct uiRect {
int x;
int y;
int width;
int height;
} uiRect;
/// Point.
typedef struct uiPoint {
int x;
int y;
} uiPoint;
/// Widget type.
typedef enum uiWidgetType {
uiTypeButton,
uiTypeFrame,
uiTypeLabel,
uiTypeTable,
uiTypeMax,
} uiWidgetType;
typedef struct uiButton uiButton;
typedef struct uiFrame uiFrame;
typedef struct uiLabel uiLabel;
typedef struct uiTable uiTable;
typedef struct uiWidget uiWidget;
/// Widget pointer.
typedef struct uiWidgetPtr {
uiWidgetType type;
union {
uiButton* button;
uiFrame* frame;
uiLabel* label;
uiTable* table;
uiWidget* widget;
};
} uiWidgetPtr;
// -----------------------------------------------------------------------------
// Library.
/// Initialize the UI library.
/// This should be called once during application startup.
bool uiInit(void);
/// Shutdown the UI library.
/// This should be called once during application shutdown.
void uiShutdown(void);
// -----------------------------------------------------------------------------
// Widget.
uiWidgetPtr uiMakeButtonPtr(uiButton*);
uiWidgetPtr uiMakeFramePtr(uiFrame*);
uiWidgetPtr uiMakeLabelPtr(uiLabel*);
uiWidgetPtr uiMakeTablePtr(uiTable*);
void uiWidgetSetParent(uiWidgetPtr child, uiWidgetPtr parent);
// -----------------------------------------------------------------------------
// Button.
/// Create a button.
uiButton* uiMakeButton(const char* text);
// -----------------------------------------------------------------------------
// Frame.
/// Create a frame.
uiFrame* uiMakeFrame(void);
/// Destroy the frame.
void uiDestroyFrame(uiFrame**);
/// Resize the frame.
void uiResizeFrame(uiFrame*, int width, int height);
/// Get the frame's dimensions.
uiSize uiGetFrameSize(const uiFrame*);
// -----------------------------------------------------------------------------
// Label.
/// Create a label.
uiLabel* uiMakeLabel(const char* text);
// -----------------------------------------------------------------------------
// Table.
/// Create a table.
uiTable* uiMakeTable(int rows, int cols, const char** header);
/// Add a row.
void uiTableAddRow(uiTable*, const char** row);
/// Set the table's cell.
void uiTableSet(uiTable*, int row, int col, uiWidgetPtr widget);
/// Get the table's cell.
const uiWidget* uiTableGet(const uiTable*, int row, int col);
/// Get the table's cell.
uiWidget* uiTableGetMut(uiTable*, int row, int col);
// -----------------------------------------------------------------------------
// Rendering.
/// Render the frame.
void uiRender(const uiFrame*, uiSurface*);
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