/* * Copyright 2014 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "sk_canvas.h" #include "sk_image.h" #include "sk_paint.h" #include "sk_path.h" #include "sk_surface.h" #include "SkCanvas.h" #include "SkImage.h" #include "SkMatrix.h" #include "SkPaint.h" #include "SkPath.h" #include "SkSurface.h" const struct { sk_colortype_t fC; SkColorType fSK; } gColorTypeMap[] = { { UNKNOWN_SK_COLORTYPE, kUnknown_SkColorType }, { RGBA_8888_SK_COLORTYPE, kRGBA_8888_SkColorType }, { BGRA_8888_SK_COLORTYPE, kBGRA_8888_SkColorType }, { ALPHA_8_SK_COLORTYPE, kAlpha_8_SkColorType }, }; const struct { sk_alphatype_t fC; SkAlphaType fSK; } gAlphaTypeMap[] = { { OPAQUE_SK_ALPHATYPE, kOpaque_SkAlphaType }, { PREMUL_SK_ALPHATYPE, kPremul_SkAlphaType }, { UNPREMUL_SK_ALPHATYPE, kUnpremul_SkAlphaType }, }; static bool from_c_colortype(sk_colortype_t cCT, SkColorType* skCT) { for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypeMap); ++i) { if (gColorTypeMap[i].fC == cCT) { if (skCT) { *skCT = gColorTypeMap[i].fSK; } return true; } } return false; } static bool to_c_colortype(SkColorType skCT, sk_colortype_t* cCT) { for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypeMap); ++i) { if (gColorTypeMap[i].fSK == skCT) { if (cCT) { *cCT = gColorTypeMap[i].fC; } return true; } } return false; } static bool from_c_alphatype(sk_alphatype_t cAT, SkAlphaType* skAT) { for (size_t i = 0; i < SK_ARRAY_COUNT(gAlphaTypeMap); ++i) { if (gAlphaTypeMap[i].fC == cAT) { if (skAT) { *skAT = gAlphaTypeMap[i].fSK; } return true; } } return false; } static bool from_c_info(const sk_imageinfo_t& cinfo, SkImageInfo* info) { SkColorType ct; SkAlphaType at; if (!from_c_colortype(cinfo.colorType, &ct)) { // optionally report error to client? return false; } if (!from_c_alphatype(cinfo.alphaType, &at)) { // optionally report error to client? return false; } if (info) { *info = SkImageInfo::Make(cinfo.width, cinfo.height, ct, at); } return true; } const struct { sk_path_direction_t fC; SkPath::Direction fSk; } gPathDirMap[] = { { CW_SK_PATH_DIRECTION, SkPath::kCW_Direction }, { CCW_SK_PATH_DIRECTION, SkPath::kCCW_Direction }, }; static bool from_c_path_direction(sk_path_direction_t cdir, SkPath::Direction* dir) { for (size_t i = 0; i < SK_ARRAY_COUNT(gPathDirMap); ++i) { if (gPathDirMap[i].fC == cdir) { if (dir) { *dir = gPathDirMap[i].fSk; } return true; } } return false; } static const SkRect& AsRect(const sk_rect_t& crect) { return reinterpret_cast(crect); } static SkRect* as_rect(sk_rect_t* crect) { return reinterpret_cast(crect); } static const SkPath& AsPath(const sk_path_t& cpath) { return reinterpret_cast(cpath); } static SkPath* as_path(sk_path_t* cpath) { return reinterpret_cast(cpath); } static const SkImage* AsImage(const sk_image_t* cimage) { return reinterpret_cast(cimage); } static const SkPaint& AsPaint(const sk_paint_t& cpaint) { return reinterpret_cast(cpaint); } static const SkPaint* AsPaint(const sk_paint_t* cpaint) { return reinterpret_cast(cpaint); } static SkPaint* AsPaint(sk_paint_t* cpaint) { return reinterpret_cast(cpaint); } static SkCanvas* AsCanvas(sk_canvas_t* ccanvas) { return reinterpret_cast(ccanvas); } /////////////////////////////////////////////////////////////////////////////////////////// sk_colortype_t sk_colortype_get_default_8888() { sk_colortype_t ct; if (!to_c_colortype(kN32_SkColorType, &ct)) { ct = UNKNOWN_SK_COLORTYPE; } return ct; } /////////////////////////////////////////////////////////////////////////////////////////// sk_image_t* sk_image_new_raster_copy(const sk_imageinfo_t* cinfo, const void* pixels, size_t rowBytes) { SkImageInfo info; if (!from_c_info(*cinfo, &info)) { return NULL; } return (sk_image_t*)SkImage::NewRasterCopy(info, pixels, rowBytes); } void sk_image_ref(const sk_image_t* cimage) { AsImage(cimage)->ref(); } void sk_image_unref(const sk_image_t* cimage) { AsImage(cimage)->unref(); } int sk_image_get_width(const sk_image_t* cimage) { return AsImage(cimage)->width(); } int sk_image_get_height(const sk_image_t* cimage) { return AsImage(cimage)->height(); } uint32_t sk_image_get_unique_id(const sk_image_t* cimage) { return AsImage(cimage)->uniqueID(); } /////////////////////////////////////////////////////////////////////////////////////////// sk_paint_t* sk_paint_new() { return (sk_paint_t*)SkNEW(SkPaint); } void sk_paint_delete(sk_paint_t* cpaint) { SkDELETE(AsPaint(cpaint)); } bool sk_paint_is_antialias(const sk_paint_t* cpaint) { return AsPaint(*cpaint).isAntiAlias(); } void sk_paint_set_antialias(sk_paint_t* cpaint, bool aa) { AsPaint(cpaint)->setAntiAlias(aa); } sk_color_t sk_paint_get_color(const sk_paint_t* cpaint) { return AsPaint(*cpaint).getColor(); } void sk_paint_set_color(sk_paint_t* cpaint, sk_color_t c) { AsPaint(cpaint)->setColor(c); } /////////////////////////////////////////////////////////////////////////////////////////// sk_path_t* sk_path_new() { return (sk_path_t*)SkNEW(SkPath); } void sk_path_delete(sk_path_t* cpath) { SkDELETE(as_path(cpath)); } void sk_path_move_to(sk_path_t* cpath, float x, float y) { as_path(cpath)->moveTo(x, y); } void sk_path_line_to(sk_path_t* cpath, float x, float y) { as_path(cpath)->lineTo(x, y); } void sk_path_quad_to(sk_path_t* cpath, float x0, float y0, float x1, float y1) { as_path(cpath)->quadTo(x0, y0, x1, y1); } void sk_path_conic_to(sk_path_t* cpath, float x0, float y0, float x1, float y1, float w) { as_path(cpath)->conicTo(x0, y0, x1, y1, w); } void sk_path_cubic_to(sk_path_t* cpath, float x0, float y0, float x1, float y1, float x2, float y2) { as_path(cpath)->cubicTo(x0, y0, x1, y1, x2, y2); } void sk_path_close(sk_path_t* cpath) { as_path(cpath)->close(); } void sk_path_add_rect(sk_path_t* cpath, const sk_rect_t* crect, sk_path_direction_t cdir) { SkPath::Direction dir; if (!from_c_path_direction(cdir, &dir)) { return; } as_path(cpath)->addRect(AsRect(*crect), dir); } void sk_path_add_oval(sk_path_t* cpath, const sk_rect_t* crect, sk_path_direction_t cdir) { SkPath::Direction dir; if (!from_c_path_direction(cdir, &dir)) { return; } as_path(cpath)->addOval(AsRect(*crect), dir); } bool sk_path_get_bounds(const sk_path_t* cpath, sk_rect_t* crect) { const SkPath& path = AsPath(*cpath); SkRect* rect = as_rect(crect); if (path.isEmpty()) { if (rect) { rect->setEmpty(); } return false; } *rect = path.getBounds(); return true; } /////////////////////////////////////////////////////////////////////////////////////////// void sk_canvas_save(sk_canvas_t* ccanvas) { AsCanvas(ccanvas)->save(); } void sk_canvas_save_layer(sk_canvas_t* ccanvas, const sk_rect_t* crect, const sk_paint_t* cpaint) { AsCanvas(ccanvas)->drawRect(AsRect(*crect), AsPaint(*cpaint)); } void sk_canvas_restore(sk_canvas_t* ccanvas) { AsCanvas(ccanvas)->restore(); } void sk_canvas_translate(sk_canvas_t* ccanvas, float dx, float dy) { AsCanvas(ccanvas)->translate(dx, dy); } void sk_canvas_scale(sk_canvas_t* ccanvas, float sx, float sy) { AsCanvas(ccanvas)->scale(sx, sy); } void sk_canvas_draw_paint(sk_canvas_t* ccanvas, const sk_paint_t* cpaint) { AsCanvas(ccanvas)->drawPaint(AsPaint(*cpaint)); } void sk_canvas_draw_rect(sk_canvas_t* ccanvas, const sk_rect_t* crect, const sk_paint_t* cpaint) { AsCanvas(ccanvas)->drawRect(AsRect(*crect), AsPaint(*cpaint)); } void sk_canvas_draw_oval(sk_canvas_t* ccanvas, const sk_rect_t* crect, const sk_paint_t* cpaint) { AsCanvas(ccanvas)->drawOval(AsRect(*crect), AsPaint(*cpaint)); } void sk_canvas_draw_path(sk_canvas_t* ccanvas, const sk_path_t* cpath, const sk_paint_t* cpaint) { AsCanvas(ccanvas)->drawPath(AsPath(*cpath), AsPaint(*cpaint)); } void sk_canvas_draw_image(sk_canvas_t* ccanvas, const sk_image_t* cimage, float x, float y, const sk_paint_t* cpaint) { AsCanvas(ccanvas)->drawImage(AsImage(cimage), x, y, AsPaint(cpaint)); } /////////////////////////////////////////////////////////////////////////////////////////// sk_surface_t* sk_surface_new_raster(const sk_imageinfo_t* cinfo) { SkImageInfo info; if (!from_c_info(*cinfo, &info)) { return NULL; } return (sk_surface_t*)SkSurface::NewRaster(info); } sk_surface_t* sk_surface_new_raster_direct(const sk_imageinfo_t* cinfo, void* pixels, size_t rowBytes) { SkImageInfo info; if (!from_c_info(*cinfo, &info)) { return NULL; } return (sk_surface_t*)SkSurface::NewRasterDirect(info, pixels, rowBytes); } void sk_surface_delete(sk_surface_t* csurf) { SkSurface* surf = (SkSurface*)csurf; SkSafeUnref(surf); } sk_canvas_t* sk_surface_get_canvas(sk_surface_t* csurf) { SkSurface* surf = (SkSurface*)csurf; return (sk_canvas_t*)surf->getCanvas(); } sk_image_t* sk_surface_new_image_snapshot(sk_surface_t* csurf) { SkSurface* surf = (SkSurface*)csurf; return (sk_image_t*)surf->newImageSnapshot(); } /////////////////// void sk_test_capi(SkCanvas* canvas) { sk_imageinfo_t cinfo; cinfo.width = 100; cinfo.height = 100; cinfo.colorType = (sk_colortype_t)kN32_SkColorType; cinfo.alphaType = (sk_alphatype_t)kPremul_SkAlphaType; sk_surface_t* csurface = sk_surface_new_raster(&cinfo); sk_canvas_t* ccanvas = sk_surface_get_canvas(csurface); sk_paint_t* cpaint = sk_paint_new(); sk_paint_set_antialias(cpaint, true); sk_paint_set_color(cpaint, 0xFFFF0000); sk_rect_t cr = { 5, 5, 95, 95 }; sk_canvas_draw_oval(ccanvas, &cr, cpaint); cr.left += 25; cr.top += 25; cr.right -= 25; cr.bottom -= 25; sk_paint_set_color(cpaint, 0xFF00FF00); sk_canvas_draw_rect(ccanvas, &cr, cpaint); sk_path_t* cpath = sk_path_new(); sk_path_move_to(cpath, 50, 50); sk_path_line_to(cpath, 100, 100); sk_path_line_to(cpath, 50, 100); sk_path_close(cpath); sk_canvas_draw_path(ccanvas, cpath, cpaint); sk_image_t* cimage = sk_surface_new_image_snapshot(csurface); // HERE WE CROSS THE C..C++ boundary canvas->drawImage((const SkImage*)cimage, 20, 20, NULL); sk_path_delete(cpath); sk_paint_delete(cpaint); sk_image_unref(cimage); sk_surface_delete(csurface); }