CanvasStateHelpers.h File Reference

#include "include/core/SkTypes.h"
#include <cstdint>

Go to the source code of this file.

Macros
#define	EXPORT

Functions
void	complex_layers_draw (SkCanvas *canvas, float left, float top, float right, float bottom, int32_t spacer)
bool EXPORT	complex_layers_draw_from_canvas_state (SkCanvasState *state, float left, float top, float right, float bottom, int32_t spacer)
void	complex_clips_draw (SkCanvas *canvas, int32_t left, int32_t top, int32_t right, int32_t bottom, int32_t clipOp, const SkRegion &localRegion)
bool EXPORT	complex_clips_draw_from_canvas_state (SkCanvasState *state, int32_t left, int32_t top, int32_t right, int32_t bottom, int32_t clipOp, int32_t regionRects, int32_t *rectCoords)

Macro Definition Documentation

EXPORT

#define EXPORT

Definition at line 28 of file CanvasStateHelpers.h.

Function Documentation

complex_clips_draw()

void complex_clips_draw	(	SkCanvas *	canvas,
		int32_t	left,
		int32_t	top,
		int32_t	right,
		int32_t	bottom,
		int32_t	clipOp,
		const SkRegion &	localRegion
	)

Definition at line 48 of file CanvasStateHelpers.cpp.

                                                                                    {
    canvas->save();
    SkRect clipRect = SkRect::MakeLTRB(SkIntToScalar(left), SkIntToScalar(top),
                                       SkIntToScalar(right), SkIntToScalar(bottom));
    canvas->clipRect(clipRect, (SkRegion::Op) clipOp);
    canvas->drawColor(SK_ColorBLUE);
    canvas->restore();
 
    canvas->clipRegion(localRegion, (SkClipOp) clipOp);
    canvas->drawColor(SK_ColorBLUE);
}

complex_clips_draw_from_canvas_state()

bool EXPORT complex_clips_draw_from_canvas_state	(	SkCanvasState *	state,
		int32_t	left,
		int32_t	top,
		int32_t	right,
		int32_t	bottom,
		int32_t	clipOp,
		int32_t	regionRects,
		int32_t *	rectCoords
	)

Definition at line 61 of file CanvasStateHelpers.cpp.

                                                  {
    std::unique_ptr<SkCanvas> canvas = SkCanvasStateUtils::MakeFromCanvasState(state);
    if (!canvas) {
        return false;
    }
 
    SkRegion localRegion;
    for (int32_t i = 0; i < regionRects; ++i) {
        localRegion.op({rectCoords[0], rectCoords[1], rectCoords[2], rectCoords[3]},
                       SkRegion::kUnion_Op);
        rectCoords += 4;
    }
 
    complex_clips_draw(canvas.get(), left, top, right, bottom, clipOp, localRegion);
    return true;
}

complex_layers_draw()

void complex_layers_draw	(	SkCanvas *	canvas,
		float	left,
		float	top,
		float	right,
		float	bottom,
		int32_t	spacer
	)

Definition at line 26 of file CanvasStateHelpers.cpp.

                                                                    {
    SkPaint bluePaint;
    bluePaint.setColor(SK_ColorBLUE);
    bluePaint.setStyle(SkPaint::kFill_Style);
 
    SkRect rect = SkRect::MakeLTRB(left, top, right, bottom);
    canvas->drawRect(rect, bluePaint);
    canvas->translate(0, rect.height() + spacer);
    canvas->drawRect(rect, bluePaint);
}

complex_layers_draw_from_canvas_state()

bool EXPORT complex_layers_draw_from_canvas_state	(	SkCanvasState *	state,
		float	left,
		float	top,
		float	right,
		float	bottom,
		int32_t	spacer
	)

Definition at line 38 of file CanvasStateHelpers.cpp.

                                                                          {
    std::unique_ptr<SkCanvas> canvas = SkCanvasStateUtils::MakeFromCanvasState(state);
    if (!canvas) {
        return false;
    }
    complex_layers_draw(canvas.get(), left, top, right, bottom, spacer);
    return true;
}