206 řádky
8.2 KiB
C
206 řádky
8.2 KiB
C
#ifndef cmGrDevCtx_h
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#define cmGrDevCtx_h
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#ifdef __cplusplus
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extern "C" {
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#endif
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//( { file_desc:"Device independent graphics context object used by cmGr." kw:[plot]}
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enum
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{
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kOkGrDcRC = cmOkRC,
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kStackFaultGrDcRC,
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kDevDrvFailGrDcRC
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};
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typedef cmRC_t cmGrDcRC_t;
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extern cmGrDcH_t cmGrDcNullHandle;
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enum
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{
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kSolidLsGrFl = 0x01,
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kDashLsGrFl = 0x02,
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kDotLsGrFl = 0x04
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};
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enum
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{
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kHelveticaFfGrId,
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kTimesFfGrId,
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kCourierFfGrId,
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kFontFfCnt
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};
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enum
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{
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kNormalFsGrFl = 0x00,
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kBoldFsGrFl = 0x01,
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kItalicFsGrFl = 0x02
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};
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typedef struct cmGrDev_str
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{
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// return true on success
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bool (*create)( void* arg, unsigned w, unsigned h );
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void (*destroy)( void* arg );
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void (*begin_draw)( void* arg );
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void (*end_draw)( void* arg );
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void (*draw)( void* arg, int x, int y );
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void (*set_color)( void* arg, const cmGrColor_t c );
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void (*get_color)( void* arg, cmGrColor_t* c );
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// Return false if the 'font' label is not recognized.
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void (*set_font_family)(void* arg, unsigned fontId );
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unsigned (*get_font_family)(void* arg );
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void (*set_font_style)( void* arg, unsigned styleFLags );
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unsigned (*get_font_style)( void* arg );
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void (*set_font_size)( void* arg, unsigned size );
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unsigned (*get_font_size)( void* arg );
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void (*set_pen_style)( void* arg, unsigned styleFlags );
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unsigned (*get_pen_style)( void* arg );
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void (*set_pen_width)( void* arg, unsigned w );
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unsigned (*get_pen_width)( void* arg );
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void (*draw_line)( void* arg, int x, int y, int x1, int y1 );
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void (*draw_rect)( void* arg, int x, int y, unsigned w, unsigned h );
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void (*fill_rect)( void* arg, int x, int y, unsigned w, unsigned h );
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// Draw an ellipse, diamond or triangle inside the rectangle formed by l,t,w,h.
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void (*draw_ellipse)( void* arg, int x, int y, unsigned w, unsigned h );
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void (*fill_ellipse)( void* arg, int x, int y, unsigned w, unsigned h );
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void (*draw_diamond)( void* arg, int x, int y, unsigned w, unsigned h );
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void (*fill_diamond)( void* arg, int x, int y, unsigned w, unsigned h );
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void (*draw_triangle)( void* arg, int x, int y, unsigned w, unsigned h, unsigned dirFlag );
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void (*fill_triangle)( void* arg, int x, int y, unsigned w, unsigned h, unsigned dirFlag );
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// x,y identifies the left,lower text edge
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void (*draw_text)( void* arg, const char* text, int x, int y );
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void (*draw_text_rot)(void* arg, const char* text, int x, int y, int angle );
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void (*measure_text)( void* arg, const char* text, unsigned* w, unsigned* h );
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// Fill p[w*h*3] with RGB data.
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void (*read_image)( void* arg, unsigned char* p, int x, int y, unsigned w, unsigned h );
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void (*draw_image)( void* arg, const unsigned char* p, int x, int y, unsigned w, unsigned h );
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} cmGrDev_t;
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cmGrDcRC_t cmGrDevCtxCreate( cmCtx_t* ctx, cmGrDcH_t* hp, cmGrDev_t* dd, void* ddArg, int x, int y, int w, int h );
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cmGrDcRC_t cmGrDevCtxDestroy( cmGrDcH_t* hp );
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bool cmGrDevCtxIsValid( cmGrDcH_t h );
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cmGrDcRC_t cmGrDevCtxResize( cmGrDcH_t h, int x, int y, int ww, int hh );
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void cmGrDevCtxSize( cmGrDcH_t h, cmGrPExt_t* pext );
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void cmGrDevCtxBeginDraw( cmGrDcH_t h );
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void cmGrDevCtxEndDraw( cmGrDcH_t h );
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void cmGrDevCtxDraw( cmGrDcH_t h );
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void cmGrDcPushCtx( cmGrDcH_t h );
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void cmGrDcPopCtx( cmGrDcH_t h );
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unsigned cmGrDcColor( cmGrDcH_t h );
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void cmGrDcSetColorRgb( cmGrDcH_t h, unsigned char r, unsigned char g, unsigned char b );
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void cmGrDcSetColor( cmGrDcH_t h, cmGrColor_t color );
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unsigned cmGrDcFontFamily( cmGrDcH_t h );
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void cmGrDcSetFontFamily( cmGrDcH_t h, unsigned fontId );
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unsigned cmGrDcFontStyle( cmGrDcH_t h );
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void cmGrDcSetFontStyle( cmGrDcH_t h, unsigned style );
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unsigned cmGrDcFontSize( cmGrDcH_t h );
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void cmGrDcSetFontSize( cmGrDcH_t h, unsigned size );
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unsigned cmGrDcPenWidth( cmGrDcH_t h );
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void cmGrDcSetPenWidth( cmGrDcH_t h, unsigned width );
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unsigned cmGrDcPenStyle( cmGrDcH_t h );
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void cmGrDcSetPenStyle( cmGrDcH_t h, unsigned style );
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void cmGrDcDrawLine( cmGrDcH_t h, int x, int y, int x1, int y1 );
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// x,y is the upper,left.
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void cmGrDcDrawRect( cmGrDcH_t h, int x, int y, unsigned ww, unsigned hh );
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void cmGrDcDrawRectPExt( cmGrDcH_t h, const cmGrPExt_t* pext );
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void cmGrDcFillRect( cmGrDcH_t h, int x, int y, unsigned ww, unsigned hh );
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void cmGrDcDrawEllipse( cmGrDcH_t h, int x, int y, unsigned ww, unsigned hh );
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void cmGrDcFillEllipse( cmGrDcH_t h, int x, int y, unsigned ww, unsigned hh );
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void cmGrDcDrawDiamond( cmGrDcH_t h, int x, int y, unsigned ww, unsigned hh );
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void cmGrDcFillDiamond( cmGrDcH_t h, int x, int y, unsigned ww, unsigned hh );
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// Set 'dirFlag' to kTopGrFl,kBottomGrFl,kRightGrFl,kLeftGrFl to indicate
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// the direction the triangle is pointeed.
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void cmGrDcDrawTriangle( cmGrDcH_t h, int x, int y, unsigned ww, unsigned hh, unsigned dirFlag );
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void cmGrDcFillTriangle( cmGrDcH_t h, int x, int y, unsigned ww, unsigned hh, unsigned dirFlag );
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void cmGrDcMeasure( cmGrDcH_t h, const cmChar_t* text, cmGrPSz_t* sz );
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void cmGrDcDrawText( cmGrDcH_t h, const cmChar_t* text, int x, int y );
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void cmGrDcDrawTextRot( cmGrDcH_t h, const cmChar_t* text, int x, int y, int angle );
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void cmGrDcReadImage( cmGrDcH_t h, unsigned char* p, const cmGrPExt_t* pext );
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void cmGrDcDrawImage( cmGrDcH_t h, const unsigned char* p, const cmGrPExt_t* pext );
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//
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// Composite Functions
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//
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void cmGrDcSetFont( cmGrDcH_t h, unsigned fontId, unsigned size, unsigned style );
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void cmGrDcFontSetAndMeasure(cmGrDcH_t h, unsigned fontId, unsigned size, unsigned style, const cmChar_t* text, cmGrPSz_t* sz );
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enum
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{
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kLeftJsGrFl = 0x001,
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kRightJsGrFl = 0x002,
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kTopJsGrFl = 0x004,
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kBottomJsGrFl = 0x008,
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kHorzCtrJsGrFl = 0x010,
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kVertCtrJsGrFl = 0x020,
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kNorthJsGrFl = 0x040,
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kEastJsGrFl = 0x080,
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kSouthJsGrFl = 0x100,
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kWestJsGrFl = 0x200
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};
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// Use compass (NSEW) flags to select the draw point. Defaults to center for both dir's.
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// Use TBLF flags to select the text justification relative to the point.
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// In effect the TBLF flags select the corner of the text to place at the location of
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// the point selected by the NSEW flags.
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// If neither NS flag is set then the vertical point is set to the vertical center.
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// If neither EW flags is set then the horizontal point is set to the horzontal center.
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void cmGrDcDrawTextJustify( cmGrDcH_t h, unsigned fontId, unsigned size, unsigned style, const cmChar_t* text, const cmGrPExt_t* pext, unsigned flags );
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// Use LBLF to set the justification - the text corner to match to the given point.
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// If neither TL flag is given then the point is matched to the vertical center of the text.
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// If neither RL flag is given then the point is matched to the horizontal center of the text.
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void cmGrDcDrawTextJustifyPt( cmGrDcH_t h, unsigned fontId, unsigned size, unsigned style, const cmChar_t* text, unsigned flags, int x, int y );
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// Return the rectangle around the text but do not display the text.
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void cmGrDcDrawTextJustifyRect( cmGrDcH_t h, unsigned fontId, unsigned size, unsigned style, const cmChar_t* text, unsigned flags, int x, int y, cmGrPExt_t* pext );
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// Is the point x,y visible in this drawing context.
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bool cmGrDcPointIsVisible( cmGrDcH_t h, int x, int y );
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// Is any of the rectangle visible in this drawing context.
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bool cmGrDcRectIsVisible( cmGrDcH_t h, const cmGrPExt_t* r );
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//)
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#ifdef __cplusplus
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}
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#endif
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#endif
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