#include <stdlib.h>
#include <stdbool.h>
#include <cairo/cairo.h>

Include dependency graph for porcupine/demo/c/dr_libs/old/dr_2d.h:

This graph shows which files directly or indirectly include this file:

Classes
struct	dr2d_color
	Structure representing an RGBA color. Color components are specified in the range of 0 - 255. More...

struct	dr2d_context

struct	dr2d_draw_image_args

struct	dr2d_drawing_callbacks

struct	dr2d_font

struct	dr2d_font_metrics

struct	dr2d_glyph_metrics

struct	dr2d_image

struct	dr2d_surface

Macros
#define	DR2D_FONT_NO_CLEARTYPE (1 << 0)

#define	DR2D_IMAGE_DRAW_BACKGROUND (1 << 0)

#define	DR2D_IMAGE_HINT_NO_ALPHA (1 << 1)

#define	DR2D_MAX_FONT_FAMILY_LENGTH 128

#define	DR2D_NO_GDI

#define	DR2D_READ (1 << 0)

#define	DR2D_WRITE (1 << 1)

Typedefs
typedef void(*	dr2d_begin_draw_proc) (dr2d_surface *pSurface)

typedef unsigned char	dr2d_byte

typedef void(*	dr2d_clear_proc) (dr2d_surface *pSurface, dr2d_color color)

typedef struct dr2d_color	dr2d_color

typedef struct dr2d_context	dr2d_context

typedef void(*	dr2d_draw_image_proc) (dr2d_surface pSurface, dr2d_image pImage, dr2d_draw_image_args *pArgs)

typedef void(*	dr2d_draw_rect_outline_proc) (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color, float outlineWidth)

typedef void(*	dr2d_draw_rect_proc) (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color)

typedef void(*	dr2d_draw_rect_with_outline_proc) (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color, float outlineWidth, dr2d_color outlineColor)

typedef void(*	dr2d_draw_round_rect_outline_proc) (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color, float width, float outlineWidth)

typedef void(*	dr2d_draw_round_rect_proc) (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color, float width)

typedef void(*	dr2d_draw_round_rect_with_outline_proc) (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color, float width, float outlineWidth, dr2d_color outlineColor)

typedef void(*	dr2d_draw_text_proc) (dr2d_surface pSurface, dr2d_font pFont, const char *text, size_t textSizeInBytes, float posX, float posY, dr2d_color color, dr2d_color backgroundColor)

typedef struct dr2d_drawing_callbacks	dr2d_drawing_callbacks

typedef void(*	dr2d_end_draw_proc) (dr2d_surface *pSurface)

typedef struct dr2d_font	dr2d_font

typedef struct dr2d_font_metrics	dr2d_font_metrics

typedef void(*	dr2d_get_clip_proc) (dr2d_surface pSurface, float pLeftOut, float pTopOut, float pRightOut, float *pBottomOut)

typedef bool(*	dr2d_get_font_metrics_proc) (dr2d_font pFont, dr2d_font_metrics pMetricsOut)

typedef bool(*	dr2d_get_glyph_metrics_proc) (dr2d_font pFont, unsigned int utf32, dr2d_glyph_metrics pMetricsOut)

typedef dr2d_image_format(*	dr2d_get_optimal_image_format_proc) (dr2d_context *pContext)

typedef bool(*	dr2d_get_text_cursor_position_from_char_proc) (dr2d_font pFont, const char text, size_t characterIndex, float *pTextCursorPosXOut)

typedef bool(*	dr2d_get_text_cursor_position_from_point_proc) (dr2d_font pFont, const char text, size_t textSizeInBytes, float maxWidth, float inputPosX, float pTextCursorPosXOut, size_t pCharacterIndexOut)

typedef struct dr2d_glyph_metrics	dr2d_glyph_metrics

typedef struct dr2d_image	dr2d_image

typedef void (	dr2d_map_image_data_proc) (dr2d_image *pImage, unsigned int accessFlags)

typedef bool(*	dr2d_measure_string_proc) (dr2d_font pFont, const char text, size_t textSizeInBytes, float pWidthOut, float pHeightOut)

typedef bool(*	dr2d_on_create_context_proc) (dr2d_context pContext, const void pUserData)

typedef bool(*	dr2d_on_create_font_proc) (dr2d_font *pFont)

typedef bool(*	dr2d_on_create_image_proc) (dr2d_image pImage, unsigned int stride, const void pData)

typedef bool(*	dr2d_on_create_surface_proc) (dr2d_surface *pSurface, float width, float height)

typedef void(*	dr2d_on_delete_context_proc) (dr2d_context *pContext)

typedef void(*	dr2d_on_delete_font_proc) (dr2d_font *pFont)

typedef void(*	dr2d_on_delete_image_proc) (dr2d_image *pImage)

typedef void(*	dr2d_on_delete_surface_proc) (dr2d_surface *pSurface)

typedef void(*	dr2d_set_clip_proc) (dr2d_surface *pSurface, float left, float top, float right, float bottom)

typedef struct dr2d_surface	dr2d_surface

typedef void(*	dr2d_unmap_image_data_proc) (dr2d_image *pImage)

Enumerations
enum	dr2d_font_slant { dr2d_font_slant_none = 0, dr2d_font_slant_italic, dr2d_font_slant_oblique, dr2d_font_slant_none = 0, dr2d_font_slant_italic, dr2d_font_slant_oblique }

enum	dr2d_font_weight { dr2d_font_weight_medium = 0, dr2d_font_weight_thin, dr2d_font_weight_extra_light, dr2d_font_weight_light, dr2d_font_weight_semi_light, dr2d_font_weight_book, dr2d_font_weight_semi_bold, dr2d_font_weight_bold, dr2d_font_weight_extra_bold, dr2d_font_weight_heavy, dr2d_font_weight_extra_heavy, dr2d_font_weight_normal = dr2d_font_weight_medium, dr2d_font_weight_default = dr2d_font_weight_medium, dr2d_font_weight_medium = 0, dr2d_font_weight_thin, dr2d_font_weight_extra_light, dr2d_font_weight_light, dr2d_font_weight_semi_light, dr2d_font_weight_book, dr2d_font_weight_semi_bold, dr2d_font_weight_bold, dr2d_font_weight_extra_bold, dr2d_font_weight_heavy, dr2d_font_weight_extra_heavy, dr2d_font_weight_normal = dr2d_font_weight_medium, dr2d_font_weight_default = dr2d_font_weight_medium }

enum	dr2d_image_format { dr2d_image_format_rgba8, dr2d_image_format_bgra8, dr2d_image_format_argb8, dr2d_image_format_rgba8, dr2d_image_format_bgra8, dr2d_image_format_argb8 }

Functions
void	dr2d_begin_draw (dr2d_surface *pSurface)
	Marks the beginning of a paint operation. More...

void	dr2d_clear (dr2d_surface *pSurface, dr2d_color color)
	Clears the given surface with the given color. More...

dr2d_context *	dr2d_create_context (dr2d_drawing_callbacks drawingCallbacks, size_t contextExtraBytes, size_t surfaceExtraBytes, size_t fontExtraBytes, size_t imageExtraBytes, const void *pUserData)
	Creats a context. More...

dr2d_context *	dr2d_create_context_cairo ()
	Creates a 2D context with Cairo as the backend. More...

dr2d_font *	dr2d_create_font (dr2d_context pContext, const char family, unsigned int size, dr2d_font_weight weight, dr2d_font_slant slant, float rotation, unsigned int flags)
	Creates a font that can be passed to dr2d_draw_text(). More...

dr2d_image *	dr2d_create_image (dr2d_context pContext, unsigned int width, unsigned int height, dr2d_image_format format, unsigned int stride, const void pData)

dr2d_surface *	dr2d_create_surface (dr2d_context *pContext, float width, float height)
	Creates a surface. More...

dr2d_surface *	dr2d_create_surface_cairo (dr2d_context pContext, cairo_t cr)
	Creates a surface that draws directly to the given cairo context. More...

void	dr2d_delete_context (dr2d_context *pContext)
	Deletes the given context. More...

void	dr2d_delete_font (dr2d_font *pFont)
	Deletes a font that was previously created with dr2d_create_font() More...

void	dr2d_delete_image (dr2d_image *pImage)
	Deletes the given image. More...

void	dr2d_delete_surface (dr2d_surface *pSurface)
	Deletes the given surface. More...

void	dr2d_draw_image (dr2d_surface pSurface, dr2d_image pImage, dr2d_draw_image_args *pArgs)
	Draws an image. More...

void	dr2d_draw_rect (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color)
	Draws a filled rectangle without an outline. More...

void	dr2d_draw_rect_outline (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color, float outlineWidth)
	Draws the outline of the given rectangle. More...

void	dr2d_draw_rect_with_outline (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color, float outlineWidth, dr2d_color outlineColor)
	Draws a filled rectangle with an outline. More...

void	dr2d_draw_round_rect (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color, float radius)
	Draws a filled rectangle without an outline with rounded corners. More...

void	dr2d_draw_round_rect_outline (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color, float radius, float outlineWidth)
	Draws the outline of the given rectangle with rounded corners. More...

void	dr2d_draw_round_rect_with_outline (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color, float radius, float outlineWidth, dr2d_color outlineColor)
	Draws a filled rectangle with an outline. More...

void	dr2d_draw_text (dr2d_surface pSurface, dr2d_font pFont, const char *text, size_t textSizeInBytes, float posX, float posY, dr2d_color color, dr2d_color backgroundColor)
	Draws a run of text. More...

void	dr2d_end_draw (dr2d_surface *pSurface)
	Marks the end of a paint operation. More...

cairo_surface_t *	dr2d_get_cairo_surface_t (dr2d_surface *pSurface)

cairo_t *	dr2d_get_cairo_t (dr2d_surface *pSurface)
	Retrieves the internal cairo_t object from the given surface. More...

void	dr2d_get_clip (dr2d_surface pSurface, float pLeftOut, float pTopOut, float pRightOut, float *pBottomOut)
	Retrieves the clipping rectangle. More...

void *	dr2d_get_context_extra_data (dr2d_context *pContext)
	Retrieves a pointer to the given context's extra data buffer. More...

void *	dr2d_get_font_extra_data (dr2d_font *pFont)
	Retrieves a pointer to the given font's extra data buffer. More...

bool	dr2d_get_font_metrics (dr2d_font pFont, dr2d_font_metrics pMetricsOut)
	Retrieves the metrics of the given font. More...

unsigned int	dr2d_get_font_size (dr2d_font *pFont)
	Retrieves the size of the given font. More...

bool	dr2d_get_glyph_metrics (dr2d_font pFont, unsigned int utf32, dr2d_glyph_metrics pMetricsOut)
	Retrieves the metrics of the glyph for the given character when rendered with the given font. More...

void *	dr2d_get_image_extra_data (dr2d_image *pImage)
	Retrieves a pointer to the given image's extra data buffer. More...

void	dr2d_get_image_size (dr2d_image pImage, unsigned int pWidthOut, unsigned int *pHeightOut)
	Retrieves the size of the given image. More...

dr2d_image_format	dr2d_get_optimal_image_format (dr2d_context *pContext)
	Retrieves the optimal image format for the given context. This depends on the backend. More...

void *	dr2d_get_surface_extra_data (dr2d_surface *pSurface)
	Retrieves a pointer to the given surface's extra data buffer. More...

float	dr2d_get_surface_height (const dr2d_surface *pSurface)
	Retrieves the height of the surface. More...

float	dr2d_get_surface_width (const dr2d_surface *pSurface)
	Retrieves the width of the surface. More...

bool	dr2d_get_text_cursor_position_from_char (dr2d_font pFont, const char text, size_t characterIndex, float *pTextCursorPosXOut)
	Retrieves the position to palce a text cursor based on the character at the given index for the given string when drawn with the given font. More...

bool	dr2d_get_text_cursor_position_from_point (dr2d_font pFont, const char text, size_t textSizeInBytes, float maxWidth, float inputPosX, float pTextCursorPosXOut, size_t pCharacterIndexOut)
	Retrieves the position to place a text cursor based on the given point for the given string when drawn with the given font. More...

void *	dr2d_map_image_data (dr2d_image *pImage, unsigned int accessFlags)

bool	dr2d_measure_string (dr2d_font pFont, const char text, size_t textSizeInBytes, float pWidthOut, float pHeightOut)
	Retrieves the dimensions of the given string when drawn with the given font. More...

dr2d_color	dr2d_rgb (dr2d_byte r, dr2d_byte g, dr2d_byte b)
	Creates a fully opaque color object from a set of RGB color components. More...

dr2d_color	dr2d_rgba (dr2d_byte r, dr2d_byte g, dr2d_byte b, dr2d_byte a)
	Creates a color object from a set of RGBA color components. More...

void	dr2d_set_clip (dr2d_surface *pSurface, float left, float top, float right, float bottom)
	Sets the clipping rectangle. More...

void	dr2d_unmap_image_data (dr2d_image *pImage)

Macro Definition Documentation

◆ DR2D_FONT_NO_CLEARTYPE

#define DR2D_FONT_NO_CLEARTYPE (1 << 0)

Definition at line 157 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ DR2D_IMAGE_DRAW_BACKGROUND

#define DR2D_IMAGE_DRAW_BACKGROUND (1 << 0)

Definition at line 151 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ DR2D_IMAGE_HINT_NO_ALPHA

#define DR2D_IMAGE_HINT_NO_ALPHA (1 << 1)

Definition at line 152 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ DR2D_MAX_FONT_FAMILY_LENGTH

#define DR2D_MAX_FONT_FAMILY_LENGTH 128

Definition at line 62 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ DR2D_NO_GDI

#define DR2D_NO_GDI

Definition at line 57 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ DR2D_READ

#define DR2D_READ (1 << 0)

Definition at line 154 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ DR2D_WRITE

#define DR2D_WRITE (1 << 1)

Definition at line 155 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

Typedef Documentation

◆ dr2d_begin_draw_proc

typedef void(* dr2d_begin_draw_proc) (dr2d_surface *pSurface)

Definition at line 208 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_byte

typedef unsigned char dr2d_byte

Definition at line 77 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_clear_proc

typedef void(* dr2d_clear_proc) (dr2d_surface *pSurface, dr2d_color color)

Definition at line 210 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_color

typedef struct dr2d_color dr2d_color

Definition at line 83 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_context

typedef struct dr2d_context dr2d_context

Definition at line 79 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_draw_image_proc

typedef void(* dr2d_draw_image_proc) (dr2d_surface *pSurface, dr2d_image *pImage, dr2d_draw_image_args *pArgs)

Definition at line 218 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_draw_rect_outline_proc

typedef void(* dr2d_draw_rect_outline_proc) (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color, float outlineWidth)

Definition at line 212 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_draw_rect_proc

typedef void(* dr2d_draw_rect_proc) (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color)

Definition at line 211 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_draw_rect_with_outline_proc

typedef void(* dr2d_draw_rect_with_outline_proc) (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color, float outlineWidth, dr2d_color outlineColor)

Definition at line 213 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_draw_round_rect_outline_proc

typedef void(* dr2d_draw_round_rect_outline_proc) (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color, float width, float outlineWidth)

Definition at line 215 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_draw_round_rect_proc

typedef void(* dr2d_draw_round_rect_proc) (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color, float width)

Definition at line 214 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_draw_round_rect_with_outline_proc

typedef void(* dr2d_draw_round_rect_with_outline_proc) (dr2d_surface *pSurface, float left, float top, float right, float bottom, dr2d_color color, float width, float outlineWidth, dr2d_color outlineColor)

Definition at line 216 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_draw_text_proc

typedef void(* dr2d_draw_text_proc) (dr2d_surface *pSurface, dr2d_font *pFont, const char *text, size_t textSizeInBytes, float posX, float posY, dr2d_color color, dr2d_color backgroundColor)

Definition at line 217 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_drawing_callbacks

typedef struct dr2d_drawing_callbacks dr2d_drawing_callbacks

Definition at line 86 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_end_draw_proc

typedef void(* dr2d_end_draw_proc) (dr2d_surface *pSurface)

Definition at line 209 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_font

typedef struct dr2d_font dr2d_font

Definition at line 81 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_font_metrics

typedef struct dr2d_font_metrics dr2d_font_metrics

Definition at line 84 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_get_clip_proc

typedef void(* dr2d_get_clip_proc) (dr2d_surface *pSurface, float *pLeftOut, float *pTopOut, float *pRightOut, float *pBottomOut)

Definition at line 220 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_get_font_metrics_proc

typedef bool(* dr2d_get_font_metrics_proc) (dr2d_font *pFont, dr2d_font_metrics *pMetricsOut)

Definition at line 224 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_get_glyph_metrics_proc

typedef bool(* dr2d_get_glyph_metrics_proc) (dr2d_font *pFont, unsigned int utf32, dr2d_glyph_metrics *pMetricsOut)

Definition at line 225 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_get_optimal_image_format_proc

typedef dr2d_image_format(* dr2d_get_optimal_image_format_proc) (dr2d_context *pContext)

Definition at line 221 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_get_text_cursor_position_from_char_proc

typedef bool(* dr2d_get_text_cursor_position_from_char_proc) (dr2d_font *pFont, const char *text, size_t characterIndex, float *pTextCursorPosXOut)

Definition at line 228 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_get_text_cursor_position_from_point_proc

typedef bool(* dr2d_get_text_cursor_position_from_point_proc) (dr2d_font *pFont, const char *text, size_t textSizeInBytes, float maxWidth, float inputPosX, float *pTextCursorPosXOut, size_t *pCharacterIndexOut)

Definition at line 227 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_glyph_metrics

typedef struct dr2d_glyph_metrics dr2d_glyph_metrics

Definition at line 85 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_image

typedef struct dr2d_image dr2d_image

Definition at line 82 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_map_image_data_proc

typedef void*(* dr2d_map_image_data_proc) (dr2d_image *pImage, unsigned int accessFlags)

Definition at line 222 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_measure_string_proc

typedef bool(* dr2d_measure_string_proc) (dr2d_font *pFont, const char *text, size_t textSizeInBytes, float *pWidthOut, float *pHeightOut)

Definition at line 226 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_on_create_context_proc

typedef bool(* dr2d_on_create_context_proc) (dr2d_context *pContext, const void *pUserData)

Definition at line 200 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_on_create_font_proc

typedef bool(* dr2d_on_create_font_proc) (dr2d_font *pFont)

Definition at line 204 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_on_create_image_proc

typedef bool(* dr2d_on_create_image_proc) (dr2d_image *pImage, unsigned int stride, const void *pData)

Definition at line 206 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_on_create_surface_proc

typedef bool(* dr2d_on_create_surface_proc) (dr2d_surface *pSurface, float width, float height)

Definition at line 202 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_on_delete_context_proc

typedef void(* dr2d_on_delete_context_proc) (dr2d_context *pContext)

Definition at line 201 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_on_delete_font_proc

typedef void(* dr2d_on_delete_font_proc) (dr2d_font *pFont)

Definition at line 205 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_on_delete_image_proc

typedef void(* dr2d_on_delete_image_proc) (dr2d_image *pImage)

Definition at line 207 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_on_delete_surface_proc

typedef void(* dr2d_on_delete_surface_proc) (dr2d_surface *pSurface)

Definition at line 203 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_set_clip_proc

typedef void(* dr2d_set_clip_proc) (dr2d_surface *pSurface, float left, float top, float right, float bottom)

Definition at line 219 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_surface

typedef struct dr2d_surface dr2d_surface

Definition at line 80 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_unmap_image_data_proc

typedef void(* dr2d_unmap_image_data_proc) (dr2d_image *pImage)

Definition at line 223 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

Enumeration Type Documentation

◆ dr2d_font_slant

enum dr2d_font_slant

Enumerator
dr2d_font_slant_none
dr2d_font_slant_italic
dr2d_font_slant_oblique
dr2d_font_slant_none
dr2d_font_slant_italic
dr2d_font_slant_oblique

Definition at line 135 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_font_weight

enum dr2d_font_weight

Enumerator
dr2d_font_weight_medium
dr2d_font_weight_thin
dr2d_font_weight_extra_light
dr2d_font_weight_light
dr2d_font_weight_semi_light
dr2d_font_weight_book
dr2d_font_weight_semi_bold
dr2d_font_weight_bold
dr2d_font_weight_extra_bold
dr2d_font_weight_heavy
dr2d_font_weight_extra_heavy
dr2d_font_weight_normal
dr2d_font_weight_default
dr2d_font_weight_medium
dr2d_font_weight_thin
dr2d_font_weight_extra_light
dr2d_font_weight_light
dr2d_font_weight_semi_light
dr2d_font_weight_book
dr2d_font_weight_semi_bold
dr2d_font_weight_bold
dr2d_font_weight_extra_bold
dr2d_font_weight_heavy
dr2d_font_weight_extra_heavy
dr2d_font_weight_normal
dr2d_font_weight_default

Definition at line 116 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

◆ dr2d_image_format

enum dr2d_image_format

Enumerator
dr2d_image_format_rgba8
dr2d_image_format_bgra8
dr2d_image_format_argb8
dr2d_image_format_rgba8
dr2d_image_format_bgra8
dr2d_image_format_argb8

Definition at line 143 of file porcupine/demo/c/dr_libs/old/dr_2d.h.

Function Documentation

◆ dr2d_begin_draw()

void dr2d_begin_draw ( dr2d_surface * pSurface )

Marks the beginning of a paint operation.

◆ dr2d_clear()

void dr2d_clear	(	dr2d_surface *	pSurface,
		dr2d_color	color
	)

Clears the given surface with the given color.

◆ dr2d_create_context()

dr2d_context* dr2d_create_context	(	dr2d_drawing_callbacks	drawingCallbacks,
		size_t	contextExtraBytes,
		size_t	surfaceExtraBytes,
		size_t	fontExtraBytes,
		size_t	imageExtraBytes,
		const void *	pUserData
	)

Creats a context.

◆ dr2d_create_context_cairo()

dr2d_context* dr2d_create_context_cairo ( )

Creates a 2D context with Cairo as the backend.

◆ dr2d_create_font()

dr2d_font* dr2d_create_font	(	dr2d_context *	pContext,
		const char *	family,
		unsigned int	size,
		dr2d_font_weight	weight,
		dr2d_font_slant	slant,
		float	rotation,
		unsigned int	flags
	)

Creates a font that can be passed to dr2d_draw_text().

◆ dr2d_create_image()

dr2d_image* dr2d_create_image	(	dr2d_context *	pContext,
		unsigned int	width,
		unsigned int	height,
		dr2d_image_format	format,
		unsigned int	stride,
		const void *	pData
	)

Creates an image that can be passed to dr2d_draw_image().

Remarks: The dimensions and format of an image are immutable. If these need to change, then the image needs to be deleted and re-created.

: If pData is NULL, the default image data is undefined.

: Use dr2d_map_image_data() and dr2d_unmap_image_data() to update or retrieve image data.

◆ dr2d_create_surface()

dr2d_surface* dr2d_create_surface	(	dr2d_context *	pContext,
		float	width,
		float	height
	)

Creates a surface.

◆ dr2d_create_surface_cairo()

dr2d_surface* dr2d_create_surface_cairo	(	dr2d_context *	pContext,
		cairo_t *	cr
	)

Creates a surface that draws directly to the given cairo context.

◆ dr2d_delete_context()

void dr2d_delete_context ( dr2d_context * pContext )

Deletes the given context.

◆ dr2d_delete_font()

void dr2d_delete_font ( dr2d_font * pFont )

Deletes a font that was previously created with dr2d_create_font()

◆ dr2d_delete_image()

void dr2d_delete_image ( dr2d_image * pImage )

Deletes the given image.

◆ dr2d_delete_surface()

void dr2d_delete_surface ( dr2d_surface * pSurface )

Deletes the given surface.

◆ dr2d_draw_image()

void dr2d_draw_image	(	dr2d_surface *	pSurface,
		dr2d_image *	pImage,
		dr2d_draw_image_args *	pArgs
	)

Draws an image.

◆ dr2d_draw_rect()

void dr2d_draw_rect	(	dr2d_surface *	pSurface,
		float	left,
		float	top,
		float	right,
		float	bottom,
		dr2d_color	color
	)

Draws a filled rectangle without an outline.

◆ dr2d_draw_rect_outline()

void dr2d_draw_rect_outline	(	dr2d_surface *	pSurface,
		float	left,
		float	top,
		float	right,
		float	bottom,
		dr2d_color	color,
		float	outlineWidth
	)

Draws the outline of the given rectangle.

◆ dr2d_draw_rect_with_outline()

void dr2d_draw_rect_with_outline	(	dr2d_surface *	pSurface,
		float	left,
		float	top,
		float	right,
		float	bottom,
		dr2d_color	color,
		float	outlineWidth,
		dr2d_color	outlineColor
	)

Draws a filled rectangle with an outline.

◆ dr2d_draw_round_rect()

void dr2d_draw_round_rect	(	dr2d_surface *	pSurface,
		float	left,
		float	top,
		float	right,
		float	bottom,
		dr2d_color	color,
		float	radius
	)

Draws a filled rectangle without an outline with rounded corners.

◆ dr2d_draw_round_rect_outline()

void dr2d_draw_round_rect_outline	(	dr2d_surface *	pSurface,
		float	left,
		float	top,
		float	right,
		float	bottom,
		dr2d_color	color,
		float	radius,
		float	outlineWidth
	)

Draws the outline of the given rectangle with rounded corners.

◆ dr2d_draw_round_rect_with_outline()

void dr2d_draw_round_rect_with_outline	(	dr2d_surface *	pSurface,
		float	left,
		float	top,
		float	right,
		float	bottom,
		dr2d_color	color,
		float	radius,
		float	outlineWidth,
		dr2d_color	outlineColor
	)

Draws a filled rectangle with an outline.

◆ dr2d_draw_text()

void dr2d_draw_text	(	dr2d_surface *	pSurface,
		dr2d_font *	pFont,
		const char *	text,
		size_t	textSizeInBytes,
		float	posX,
		float	posY,
		dr2d_color	color,
		dr2d_color	backgroundColor
	)

Draws a run of text.

◆ dr2d_end_draw()

void dr2d_end_draw ( dr2d_surface * pSurface )

Marks the end of a paint operation.

◆ dr2d_get_cairo_surface_t()

cairo_surface_t* dr2d_get_cairo_surface_t ( dr2d_surface * pSurface )

Retrieves the internal cairo_surface_t object from the given surface.

Remarks: This assumes the given surface was created from a context that was created with dr2d_create_context_cairo().

◆ dr2d_get_cairo_t()

cairo_t* dr2d_get_cairo_t ( dr2d_surface * pSurface )

Retrieves the internal cairo_t object from the given surface.

◆ dr2d_get_clip()

void dr2d_get_clip	(	dr2d_surface *	pSurface,
		float *	pLeftOut,
		float *	pTopOut,
		float *	pRightOut,
		float *	pBottomOut
	)

Retrieves the clipping rectangle.

◆ dr2d_get_context_extra_data()

void* dr2d_get_context_extra_data ( dr2d_context * pContext )

Retrieves a pointer to the given context's extra data buffer.

◆ dr2d_get_font_extra_data()

void* dr2d_get_font_extra_data ( dr2d_font * pFont )

Retrieves a pointer to the given font's extra data buffer.

◆ dr2d_get_font_metrics()

bool dr2d_get_font_metrics	(	dr2d_font *	pFont,
		dr2d_font_metrics *	pMetricsOut
	)

Retrieves the metrics of the given font.

◆ dr2d_get_font_size()

unsigned int dr2d_get_font_size ( dr2d_font * pFont )

Retrieves the size of the given font.

◆ dr2d_get_glyph_metrics()

bool dr2d_get_glyph_metrics	(	dr2d_font *	pFont,
		unsigned int	utf32,
		dr2d_glyph_metrics *	pMetricsOut
	)

Retrieves the metrics of the glyph for the given character when rendered with the given font.

◆ dr2d_get_image_extra_data()

void* dr2d_get_image_extra_data ( dr2d_image * pImage )

Retrieves a pointer to the given image's extra data buffer.

◆ dr2d_get_image_size()

void dr2d_get_image_size	(	dr2d_image *	pImage,
		unsigned int *	pWidthOut,
		unsigned int *	pHeightOut
	)

Retrieves the size of the given image.

◆ dr2d_get_optimal_image_format()

dr2d_image_format dr2d_get_optimal_image_format ( dr2d_context * pContext )

Retrieves the optimal image format for the given context. This depends on the backend.

◆ dr2d_get_surface_extra_data()

void* dr2d_get_surface_extra_data ( dr2d_surface * pSurface )

Retrieves a pointer to the given surface's extra data buffer.

◆ dr2d_get_surface_height()

float dr2d_get_surface_height ( const dr2d_surface * pSurface )

Retrieves the height of the surface.

◆ dr2d_get_surface_width()

float dr2d_get_surface_width ( const dr2d_surface * pSurface )

Retrieves the width of the surface.

◆ dr2d_get_text_cursor_position_from_char()

bool dr2d_get_text_cursor_position_from_char	(	dr2d_font *	pFont,
		const char *	text,
		size_t	characterIndex,
		float *	pTextCursorPosXOut
	)

Retrieves the position to palce a text cursor based on the character at the given index for the given string when drawn with the given font.

◆ dr2d_get_text_cursor_position_from_point()

bool dr2d_get_text_cursor_position_from_point	(	dr2d_font *	pFont,
		const char *	text,
		size_t	textSizeInBytes,
		float	maxWidth,
		float	inputPosX,
		float *	pTextCursorPosXOut,
		size_t *	pCharacterIndexOut
	)

Retrieves the position to place a text cursor based on the given point for the given string when drawn with the given font.

◆ dr2d_map_image_data()

void* dr2d_map_image_data	(	dr2d_image *	pImage,
		unsigned int	accessFlags
	)

Retrieves a pointer to a buffer representing the given image's data.

Call dr2d_unmap_image_data() when you are done with this function.

Use this function to access an image's data. The returned pointer does not necessarilly point to the image's actual data, so when writing to this pointer, nothing is guaranteed to be updated until dr2d_unmap_image_data() is called.

The returned data will contain the image data at the time of the mapping.

This will fail if the image's data is already mapped.

◆ dr2d_measure_string()

bool dr2d_measure_string	(	dr2d_font *	pFont,
		const char *	text,
		size_t	textSizeInBytes,
		float *	pWidthOut,
		float *	pHeightOut
	)

Retrieves the dimensions of the given string when drawn with the given font.

◆ dr2d_rgb()

dr2d_color dr2d_rgb	(	dr2d_byte	r,
		dr2d_byte	g,
		dr2d_byte	b
	)

Creates a fully opaque color object from a set of RGB color components.

◆ dr2d_rgba()

dr2d_color dr2d_rgba	(	dr2d_byte	r,
		dr2d_byte	g,
		dr2d_byte	b,
		dr2d_byte	a
	)

Creates a color object from a set of RGBA color components.

◆ dr2d_set_clip()

void dr2d_set_clip	(	dr2d_surface *	pSurface,
		float	left,
		float	top,
		float	right,
		float	bottom
	)

Sets the clipping rectangle.

◆ dr2d_unmap_image_data()

void dr2d_unmap_image_data ( dr2d_image * pImage )

Unmaps the given image's data.

A flush is done at this point to ensure the actual underlying image data is updated.

Classes

Macros

Typedefs

Enumerations

Functions