gdisp.h File Reference

Detailed Description

GDISP Graphic Driver subsystem header file.

Definition in file gdisp.h.

#include "../../gfx.h"
#include "gdisp_colors.h"
#include "gdisp_image.h"
#include "gdisp_pixmap.h"

Go to the source code of this file.

Data Structures
struct	gPoint
	Type for a 2D point on the screen. More...

Functions
gColor	gdispBlendColor (gColor fg, gColor bg, gU8 alpha)
	Blend 2 colors according to the alpha. More...
gColor	gdispContrastColor (gColor color)
	Find a contrasting color. More...
GDisplay *	gdispGetDisplay (unsigned display)
	Get the specified display. More...
void	gdispSetDisplay (GDisplay *g)
	Set the current default display to the specified display. More...
unsigned	gdispGetDisplayCount (void)
	Get the count of currently active displays. More...
gCoord	gdispGGetWidth (GDisplay *g)
	Get the display width in pixels. More...
gCoord	gdispGGetHeight (GDisplay *g)
	Get the display height in pixels. More...
gPowermode	gdispGGetPowerMode (GDisplay *g)
	Get the current display power mode. More...
gOrientation	gdispGGetOrientation (GDisplay *g)
	Get the current display orientation. More...
gU8	gdispGGetBacklight (GDisplay *g)
	Get the current display backlight brightness. More...
gU8	gdispGGetContrast (GDisplay *g)
	Get the current display contrast. More...
void	gdispGFlush (GDisplay *g)
	Flush current drawing operations to the display. More...
void	gdispGClear (GDisplay *g, gColor color)
	Clear the display to the specified color. More...
void	gdispGDrawPixel (GDisplay *g, gCoord x, gCoord y, gColor color)
	Set a pixel in the specified color. More...
void	gdispGDrawLine (GDisplay *g, gCoord x0, gCoord y0, gCoord x1, gCoord y1, gColor color)
	Draw a line. More...
void	gdispGFillArea (GDisplay *g, gCoord x, gCoord y, gCoord cx, gCoord cy, gColor color)
	Fill an area with a color. More...
void	gdispGBlitArea (GDisplay *g, gCoord x, gCoord y, gCoord cx, gCoord cy, gCoord srcx, gCoord srcy, gCoord srccx, const gPixel *buffer)
	Fill an area using the supplied bitmap. More...
void	gdispGDrawBox (GDisplay *g, gCoord x, gCoord y, gCoord cx, gCoord cy, gColor color)
	Draw a rectangular box. More...
void	gdispGStreamStart (GDisplay *g, gCoord x, gCoord y, gCoord cx, gCoord cy)
	Start a streaming operation. More...
void	gdispGStreamColor (GDisplay *g, gColor color)
	Send pixel data to the stream. More...
void	gdispGStreamStop (GDisplay *g)
	Finish the current streaming operation. More...
void	gdispGSetClip (GDisplay *g, gCoord x, gCoord y, gCoord cx, gCoord cy)
	Clip all drawing to the defined area. More...
void	gdispGDrawCircle (GDisplay *g, gCoord x, gCoord y, gCoord radius, gColor color)
	Draw a circle. More...
void	gdispGFillCircle (GDisplay *g, gCoord x, gCoord y, gCoord radius, gColor color)
	Draw a filled circle. More...
void	gdispGFillDualCircle (GDisplay *g, gCoord x, gCoord y, gCoord radius1, gColor color1, gCoord radius2, gColor color2)
	Draw two filled circles with the same centre. More...
void	gdispGDrawEllipse (GDisplay *g, gCoord x, gCoord y, gCoord a, gCoord b, gColor color)
	Draw an ellipse. More...
void	gdispGFillEllipse (GDisplay *g, gCoord x, gCoord y, gCoord a, gCoord b, gColor color)
	Draw a filled ellipse. More...
void	gdispGDrawArcSectors (GDisplay *g, gCoord x, gCoord y, gCoord radius, gU8 sectors, gColor color)
	Draw a selection of 45 degree arcs of a circle. More...
void	gdispGFillArcSectors (GDisplay *g, gCoord x, gCoord y, gCoord radius, gU8 sectors, gColor color)
	Fill a selection of 45 degree arcs of a circle. More...
void	gdispGDrawArc (GDisplay *g, gCoord x, gCoord y, gCoord radius, gCoord startangle, gCoord endangle, gColor color)
	Draw an arc. More...
void	gdispGDrawThickArc (GDisplay *g, gCoord xc, gCoord yc, gCoord startradius, gCoord endradius, gCoord startangle, gCoord endangle, gColor color)
	Draw a thick arc. More...
void	gdispGFillArc (GDisplay *g, gCoord x, gCoord y, gCoord radius, gCoord startangle, gCoord endangle, gColor color)
	Draw a filled arc. More...
gColor	gdispGGetPixelColor (GDisplay *g, gCoord x, gCoord y)
	Get the color of a pixel. More...
void	gdispGVerticalScroll (GDisplay *g, gCoord x, gCoord y, gCoord cx, gCoord cy, int lines, gColor bgcolor)
	Scroll vertically a section of the screen. More...
void	gdispGControl (GDisplay *g, unsigned what, void *value)
	Control hardware specific parts of the display. eg powermodes, backlight etc. More...
void *	gdispGQuery (GDisplay *g, unsigned what)
	Query a property of the display. More...
void	gdispGDrawPoly (GDisplay *g, gCoord tx, gCoord ty, const gPoint *pntarray, unsigned cnt, gColor color)
	Draw an enclosed polygon (convex, non-convex or complex). More...
void	gdispGFillConvexPoly (GDisplay *g, gCoord tx, gCoord ty, const gPoint *pntarray, unsigned cnt, gColor color)
	Fill a convex polygon. More...
void	gdispGDrawThickLine (GDisplay *g, gCoord x0, gCoord y0, gCoord x1, gCoord y1, gColor color, gCoord width, gBool round)
	Draw a line with a specified thickness. More...
void	gdispGDrawChar (GDisplay *g, gCoord x, gCoord y, gU16 c, gFont font, gColor color)
	Draw a text character. More...
void	gdispGFillChar (GDisplay *g, gCoord x, gCoord y, gU16 c, gFont font, gColor color, gColor bgcolor)
	Draw a text character with a filled background. More...
void	gdispGDrawString (GDisplay *g, gCoord x, gCoord y, const char *str, gFont font, gColor color)
	Draw a text string. More...
void	gdispGFillString (GDisplay *g, gCoord x, gCoord y, const char *str, gFont font, gColor color, gColor bgcolor)
	Draw a text string. More...
void	gdispGDrawStringBox (GDisplay *g, gCoord x, gCoord y, gCoord cx, gCoord cy, const char *str, gFont font, gColor color, gJustify justify)
	Draw a text string vertically centered within the specified box. More...
void	gdispGFillStringBox (GDisplay *g, gCoord x, gCoord y, gCoord cx, gCoord cy, const char *str, gFont font, gColor color, gColor bgColor, gJustify justify)
	Draw a text string vertically centered within the specified box. The box background is filled with the specified background color. More...
gCoord	gdispGetFontMetric (gFont font, gFontmetric metric)
	Get a metric of a font. More...
gCoord	gdispGetCharWidth (char c, gFont font)
	Get the pixel width of a character. More...
gCoord	gdispGetStringWidthCount (const char *str, gFont font, gU16 count)
	Get the pixel width of a string of a given character length. More...
gCoord	gdispGetStringWidth (const char *str, gFont font)
	Get the pixel width of an entire string. More...
gFont	gdispOpenFont (const char *name)
	Find a font and return it. More...
void	gdispCloseFont (gFont font)
	Release a font after use. More...
gFont	gdispScaleFont (gFont font, gU8 scale_x, gU8 scale_y)
	Make a scaled copy of an existing font. More...
const char *	gdispGetFontName (gFont font)
	Get the name of the specified font. More...
gBool	gdispAddFont (gFont font)
	Add a font permanently to the font list. More...
void	gdispGDrawRoundedBox (GDisplay *g, gCoord x, gCoord y, gCoord cx, gCoord cy, gCoord radius, gColor color)
	Draw a rectangular box with rounded corners. More...
void	gdispGFillRoundedBox (GDisplay *g, gCoord x, gCoord y, gCoord cx, gCoord cy, gCoord radius, gColor color)
	Draw a filled rectangular box with rounded corners. More...

Variables
GDisplay *	GDISP
	The default screen to use for the gdispXXXX calls. More...

Macros
#define	GDISP_CONTROL_POWER   0
	Driver Control Constants. More...
#define	gdispGSetPowerMode(g, powerMode)   gdispGControl((g), GDISP_CONTROL_POWER, (void *)(gPowermode)(powerMode))
	Set the display power mode. More...
#define	gdispGSetOrientation(g, newOrientation)   gdispGControl((g), GDISP_CONTROL_ORIENTATION, (void *)(unsigned)(newOrientation))
	Set the display orientation. More...
#define	gdispGSetBacklight(g, percent)   gdispGControl((g), GDISP_CONTROL_BACKLIGHT, (void *)(unsigned)(percent))
	Set the display backlight. More...
#define	gdispGSetContrast(g, percent)   gdispGControl((g), GDISP_CONTROL_CONTRAST, (void *)(unsigned)(percent))
	Set the display contrast. More...
#define	gdispGUnsetClip(g)   gdispGSetClip((g),0,0,gdispGGetWidth(g),gdispGGetHeight(g))
	Reset the clip area to the full screen. More...

Typedefs
typedef gI16	gCoord
	The type for a coordinate or length on the screen. More...
typedef const struct mf_font_s *	gFont
	The type of a font. More...
typedef gColor	gPixel
	The pixel format. More...

Enumerations
enum	gJustify {   gJustifyLeft = 0x00 , gJustifyCenter = 0x01 , gJustifyRight = 0x02 , gJustifyTop = 0x10 ,   gJustifyMiddle = 0x00 , gJustifyBottom = 0x20 , gJustifyWordWrap = 0x00 , gJustifyNoWordWrap = 0x40 ,   gJustifyPad = 0x00 , gJustifyNoPad = 0x04 }
	Type for the text justification. More...
enum	gFontmetric {   gFontHeight , gFontDescendersHeight , gFontLineSpacing , gFontCharPadding ,   gFontMinWidth , gFontMaxWidth , gFontBaselineX , gFontBaselineY }
	Type for the font metric. More...
enum	gOrientation {   gOrientation0 = 0 , gOrientation90 = 90 , gOrientation180 = 180 , gOrientation270 = 270 ,   gOrientationPortrait = 1000 , gOrientationLandscape = 1001 }
	Type for the screen orientation. More...
enum	gPowermode { gPowerOff , gPowerSleep , gPowerDeepSleep , gPowerOn }
	Type for the available power modes for the screen. More...