GAG::SDLDrawableSurface Class Reference
[Libgag graphic library]

#include <SDLGraphicContext.h>

Inheritance diagram for GAG::SDLDrawableSurface:

List of all members.

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Detailed Description

Drawable surface using SDL.

Public Member Functions
virtual bool	setRes (int w, int h, int depth=32, Uint32 flags=DEFAULT)
	Set the resolution.
virtual void	setAlpha (bool usePerPixelAlpha=false, Uint8 alphaValue=ALPHA_OPAQUE)
	Set the alpha properties of the surface.
virtual int	getW (void)
	Return the width of the surface.
virtual int	getH (void)
	Return the height of the surface.
virtual int	getDepth (void)
	Return the depth of the surface.
virtual int	getFlags (void)
	Return the flags of the surface.
virtual void	setClipRect (int x, int y, int w, int h)
	Set the clipping rectangle.
virtual void	setClipRect (void)
	Clear the clipping rectangle (set it to surface dimension).
virtual void	loadImage (const char *name)
	Load image name on the surface.
virtual void	drawSprite (int x, int y, Sprite *sprite, int index=0)
	Draw sprite frame index at (x,y).
virtual void	drawPixel (int x, int y, Uint8 r, Uint8 g, Uint8 b, Uint8 a=ALPHA_OPAQUE)
	Set pixel (x,y) to color (r,g,b,a).
virtual void	drawRect (int x, int y, int w, int h, Uint8 r, Uint8 g, Uint8 b, Uint8 a=ALPHA_OPAQUE)
	Draw an empty rectangle from (x,y) to (x+w,y+h) using color (r,g,b,a).
virtual void	drawFilledRect (int x, int y, int w, int h, Uint8 r, Uint8 g, Uint8 b, Uint8 a=ALPHA_OPAQUE)
	Draw a filled rectangle from (x,y) to (x+w,y+h) using color (r,g,b,a).
virtual void	drawVertLine (int x, int y, int l, Uint8 r, Uint8 g, Uint8 b, Uint8 a=ALPHA_OPAQUE)
	Draw a vertical line from (x,y) to (x,y+l) using color (r,g,b,a).
virtual void	drawHorzLine (int x, int y, int l, Uint8 r, Uint8 g, Uint8 b, Uint8 a=ALPHA_OPAQUE)
	Draw a horizonzal line from (x,y) to (x+l,y) using color (r,g,b,a).
virtual void	drawLine (int x1, int y1, int x2, int y2, Uint8 r, Uint8 g, Uint8 b, Uint8 a=ALPHA_OPAQUE)
virtual void	drawCircle (int x, int y, int ray, Uint8 r, Uint8 g, Uint8 b, Uint8 a=ALPHA_OPAQUE)
	Draw an empty circle of radius ray centered in (x,y) using color (r,g,b,a).
virtual void	drawString (int x, int y, const Font *font, int i)
	Draw text of value i at (x,y) using font.
virtual void	drawString (int x, int y, const Font *font, const char *msg)
	Draw msg at (x,y) using font.
virtual void	drawString (int x, int y, int w, const Font *font, const char *msg)
	Draw msg from (x,y) with width w using font.
virtual void	drawSurface (int x, int y, DrawableSurface *surface)
	Draw surface at (x,y).
virtual void	updateRects (SDL_Rect *rects, int size)
	Blit to screen rectangles rects, which is an array of length size.
virtual void	updateRect (int x, int y, int w, int h)
	Blit to screen rectangle from (x,y) to (x+w,y+h).
virtual void *	getPixelPointer (void)
	Return a pointer to pixels of the underlying surface.
Protected Member Functions
	SDLDrawableSurface ()
	Private constructor, created by GraphicContext.
Protected Attributes
SDL_Surface *	surface
	the underlying SDL surface
SDL_Rect	clipRect
	clipping rectangle
Uint32	flags
	flags for this surface
Friends
class	SDLSprite
class	SDLGraphicContext

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Member Function Documentation

void GAG::SDLDrawableSurface::drawLine (  int  x1, int  y1, int  x2, int  y2, Uint8  r, Uint8  g, Uint8  b, Uint8  a = ALPHA_OPAQUE )  [virtual]

Return the signe of x Implements GAG::DrawableSurface.

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The documentation for this class was generated from the following files:

• libgag/SDLGraphicContext.h
• libgag/SDLGraphicContext.cpp

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