DrawBuf

drawing buffer - image container which allows to perform some drawing operations

class DrawBuf : RefCountedObject {

Rect _clipRect;

NinePatch* _ninePatch;

version(USE_OPENGL)

version(USE_OPENGL)

uint id [@property getter];

void function(uint) _onDestroyCallback;

void function(uint) onDestroyCallback [@property setter];

void function(uint) onDestroyCallback [@property getter];

const(NinePatch)* ninePatch [@property getter];

NinePatch* ninePatch [@property setter];

bool hasNinePatch [@property getter];

bool detectNinePatch();

int width [@property getter];

int height [@property getter];

Rect clipRect [@property getter];

Rect clipOrFullRect [@property getter];

Rect clipRect [@property setter];

Rect intersectClipRect [@property setter];

bool applyClipping(Rect rc);

bool applyClipping(Rect rc, Rect rc2);

void beforeDrawing();

void afterDrawing();

int bpp [@property getter];

void resize(int width, int height);

void fill(uint color);

void fillRect(Rect rc, uint color);

void drawGlyph(int x, int y, Glyph* glyph, uint color);

void drawFragment(int x, int y, DrawBuf src, Rect srcrect);

void drawRescaled(Rect dstrect, DrawBuf src, Rect srcrect);

void drawImage(int x, int y, DrawBuf src);

DrawBuf transformColors(ColorTransform transform);

void clear();

}

Constructors

this this(): Undocumented in source.

Destructor

~this ~this(): Undocumented in source.

Members

Functions

afterDrawing void afterDrawing(): reserved for hardware-accelerated drawing - ends drawing batch
applyClipping bool applyClipping(Rect rc): apply clipRect and buffer bounds clipping to rectangle
applyClipping bool applyClipping(Rect rc, Rect rc2): apply clipRect and buffer bounds clipping to rectangle; if clippinup applied to first rectangle, reduce second rectangle bounds proportionally.
beforeDrawing void beforeDrawing(): reserved for hardware-accelerated drawing - begins drawing batch
clear void clear(): Undocumented in source. Be warned that the author may not have intended to support it.
detectNinePatch bool detectNinePatch(): override to detect nine patch using image 1-pixel border; returns true if 9-patch markup is found in image.
drawFragment void drawFragment(int x, int y, DrawBuf src, Rect srcrect): draw source buffer rectangle contents to destination buffer
drawGlyph void drawGlyph(int x, int y, Glyph* glyph, uint color): draw 8bit alpha image - usually font glyph using specified color (clipping is applied)
drawImage void drawImage(int x, int y, DrawBuf src): draw unscaled image at specified coordinates
drawRescaled void drawRescaled(Rect dstrect, DrawBuf src, Rect srcrect): draw source buffer rectangle contents to destination buffer rectangle applying rescaling
fill void fill(uint color): fill the whole buffer with solid color (no clipping applied)
fillRect void fillRect(Rect rc, uint color): fill rectangle with solid color (clipping is applied)
resize void resize(int width, int height): resize buffer
transformColors DrawBuf transformColors(ColorTransform transform): create drawbuf with copy of current buffer with changed colors (returns this if not supported)

Properties

bpp int bpp [@property getter]: returns buffer bits per pixel
clipOrFullRect Rect clipOrFullRect [@property getter]: returns clipping rectangle, or (0,0,dx,dy) when no clipping.
clipRect Rect clipRect [@property getter]: returns clipping rectangle, when clipRect.isEmpty == true -- means no clipping.
clipRect Rect clipRect [@property setter]: sets new clipping rectangle, when clipRect.isEmpty == true -- means no clipping.
hasNinePatch bool hasNinePatch [@property getter]: check whether there is nine-patch information available for drawing buffer
height int height [@property getter]: returns current height
id uint id [@property getter]: unique ID of drawbug instance, for using with hardware accelerated rendering for caching
intersectClipRect Rect intersectClipRect [@property setter]: sets new clipping rectangle, when clipRect.isEmpty == true -- means no clipping.
ninePatch const(NinePatch)* ninePatch [@property getter]: get nine patch information pointer, null if this is not a nine patch image buffer
ninePatch NinePatch* ninePatch [@property setter]: set nine patch information pointer, null if this is not a nine patch image buffer
onDestroyCallback void function(uint) onDestroyCallback [@property setter]: Undocumented in source. Be warned that the author may not have intended to support it.
onDestroyCallback void function(uint) onDestroyCallback [@property getter]: Undocumented in source. Be warned that the author may not have intended to support it.
width int width [@property getter]: returns current width

Variables

_clipRect Rect _clipRect;: Undocumented in source.
_id uint _id;: Undocumented in source.
_ninePatch NinePatch* _ninePatch;: Undocumented in source.
_onDestroyCallback void function(uint) _onDestroyCallback;: Undocumented in source.

Meta

Source

See Implementation

dlangui graphics drawbuf aliases

DrawBufRef

classes

functions

structs

variables