experimental c api

BUG=skia:

Review URL: https://codereview.chromium.org/624973004

experimental/sk_surface.cpp

@@ -0,0 +1,124 @@
+#include "sk_surface.h"
+
+#include "SkCanvas.h"
+#include "SkImage.h"
+#include "SkMatrix.h"
+#include "SkPaint.h"
+#include "SkPath.h"
+#include "SkSurface.h"
+
+void sk_matrix_set_identity(sk_matrix_t* cmatrix) {
+    sk_bzero(cmatrix->mat, sizeof(9 * sizeof(float)));
+    cmatrix->mat[0] = cmatrix->mat[4] = cmatrix->mat[8] = 1;
+}
+
+static SkImageInfo make(const sk_image_info& cinfo) {
+    return SkImageInfo::Make(cinfo.width, cinfo.height,
+                             (SkColorType)cinfo.colorType, (SkAlphaType)cinfo.alphaType);
+}
+
+static const SkRect& AsRect(const sk_rect_t& crect) { return static_cast<const SkRect&>(crect); }
+
+static const SkPaint& AsPaint(const sk_paint_t& cpaint) {
+    return static_cast<const SkPaint&>(cpaint);
+}
+
+static const SkPaint* AsPaint(const sk_paint_t* cpaint) {
+    return static_cast<const SkPaint*>(cpaint);
+}
+
+static SkCanvas* AsCanvas(sk_canvas_t* ccanvas) { return static_cast<SkCanvas*>(ccanvas); }
+
+///////////////////////////////////////////////////////////////////////////////////////////
+
+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(dx, dy);
+}
+
+void sk_canvas_concat(sk_canvas_t* ccanvas, const sk_matrix_t* cmatrix) {
+    AsCanvas(ccanvas)->concat(AsMatrix(*cmatrix));
+}
+
+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_image_t* sk_image_new_raster_copy(const sk_image_info_t* cinfo, const void* pixels,
+                                     size_t rowBytes) {
+    return (sk_image_t*)SkImage::NewRasterCopy(make(*cinfo), pixels, rowBytes);
+}
+
+int sk_image_get_width(const sk_image_t* cimage) {
+    return ((const SkImage*)cimage)->width();
+}
+
+int sk_image_get_height(const sk_image_t* cimage) {
+    return ((const SkImage*)cimage)->height();
+}
+
+uint32_t sk_image_get_unique_id(const sk_image_t* cimage) {
+    return ((const SkImage*)cimage)->uniqueID();
+}
+
+///////////////////////////////////////////////////////////////////////////////////////////
+
+sk_surface_t* sk_surface_new_raster(const sk_image_info_t* cinfo) {
+    return (sk_surface_t*)SkSurface::NewRaster(make(*cinfo));
+}
+
+sk_surface_t* sk_surface_new_raster_direct(const sk_image_info_t* cinfo, void* pixels,
+                                           size_t rowBytes) {
+    return (sk_surface_t*)SkSurface::NewRasterDirect(make(*cinfo), 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 surf->getCanvas();
+}
+
+sk_image_t* sk_surface_new_image_snapshot(sk_surface_t* csurf) {
+    SkSurface* surf = (SkSurface*)csurf;
+    return surf->newImageSnapshot();
+}
+
+

experimental/sk_surface.h

@@ -0,0 +1,83 @@
+
+
+typedef uint32_t sk_color_t;
+
+sk_color_t sk_color_set_argb(uint8_t a, uint8_t r, uint8_t g, uint8_t b);
+uint8_t sk_color_get_a(sk_color_t);
+
+typedef enum {
+    UNKNOWN_SK_COLORTYPE,
+    RGBA_8888_SK_COLORTYPE,
+    BGRA_8888_SK_COLORTYPE,
+    ALPHA_8_SK_COLORTYPE,
+} sk_colortype_t;
+
+typedef struct sk_imageinfo_t {
+    int32_t         width;
+    int32_t         height;
+    sk_colortype_t  colorType;
+    sk_alphatype_t  colorType;
+};
+
+typedef struct sk_rect_t {
+    float   left;
+    float   top;
+    float   right;
+    float   bottom;
+};
+
+typedef struct sk_matrix_t {
+    float mat[9];
+};
+
+void sk_matrix_set_identity(sk_matrix_t*);
+
+typedef struct sk_path_t;
+
+sk_path_t* sk_path_new();
+void sk_path_move_to(sk_path*, float x, float y);
+void sk_path_line_to(sk_path*, float x, float y);
+void sk_path_quad_to(sk_path*, float x0, float y1, float x1, float y1);
+void sk_path_get_bounds(const sk_path_t*, sk_rect_t*);
+
+typedef struct sk_paint_t;
+
+sk_paint_t* sk_paint_new();
+bool sk_paint_is_antialias(sk_paint_t*);
+void sk_paint_set_antialias(sk_paint_t*, bool);
+sk_color_t sk_paint_get_color(const sk_paint_t*);
+void sk_paint_set_color(sk_paint_t*, sk_color_t);
+
+typedef struct sk_canvas_t;
+
+void sk_canvas_save(sk_canvas_t*);
+void sk_canvas_save_layer(sk_canvas_t*, const sk_rect_t*, const sk_paint_t*);
+void sk_canvas_restore(sk_canvas_t*);
+
+void sk_canvas_translate(sk_canvas_t*, sk_scalar_t dx, sk_scalar_t dy);
+void sk_canvas_scale(sk_canvas_t*, sk_scalar_t sx, sk_scalar_t sy);
+void sk_canvas_concat(sk_canvas_t*, const sk_matrix_t*);
+
+void sk_canvas_draw_paint(sk_canvas_t*, const sk_paint_t*);
+void sk_canvas_draw_rect(sk_canvas_t*, const sk_rect_t*, const sk_paint_t*);
+void sk_canvas_draw_oval(sk_canvas_t*, const sk_rect_t*, const sk_paint_t*);
+void sk_canvas_draw_path(sk_canvas_t*, const sk_path_t*, const sk_paint_t*);
+void sk_canvas_draw_image(sk_canvas_t*, const sk_image_t*, float x, float y, const sk_paint_t*);
+
+typedef struct sk_image_t;
+
+sk_image_t* sk_image_new_raster_copy(const sk_image_info_t*, const void* pixels, size_t rowBytes);
+
+int sk_image_get_width(const sk_image_t*);
+int sk_image_get_height(const sk_image_t*);
+uint32_t sk_image_get_unique_id(const sk_image_t*);
+
+typedef struct sk_surface_t;
+
+sk_surface_t* sk_surface_new_raster(const sk_image_info_t*)
+sk_surface_t* sk_surface_new_raster_direct(const sk_image_info_t*, void* pixels, size_t rowBytes);
+void sk_surface_delete(sk_surface_t*);
+
+sk_canvas_t* sk_surface_get_canvas(sk_surface_t*);
+sk_image_t* sk_surface_new_image_snapshot(sk_surface_t*);
+