1ff585637a
While working on creating bindings for dlang, I noticed that there was a
missing call to `sk_imageinfo_delete`, corresponding to the call to
`sk_imageinfo_new` in the c-api example. At first I thought that
`sk_surface_new_raster` (or something else) would free the image info
object internally, but after checking the implementation I saw this was
not the case.
This can be trivially verified with valgrind:
Before this change:
$ valgrind ./skia-c-example 2>&1 | grep 'definitely lost'
==186215== definitely lost: 24 bytes in 1 blocks
After:
$ valgrind ./skia-c-example 2>&1 | grep 'definitely lost'
==185878== definitely lost: 0 bytes in 0 blocks
Test: built and ran skia-c-example.c under valgrind
Change-Id: Ie3fba2e7602341d2f5e7dac198b3ec5923777cbd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/260021
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include <stdio.h>
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#include "include/c/sk_canvas.h"
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#include "include/c/sk_data.h"
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#include "include/c/sk_image.h"
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#include "include/c/sk_imageinfo.h"
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#include "include/c/sk_paint.h"
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#include "include/c/sk_path.h"
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#include "include/c/sk_surface.h"
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static sk_surface_t* make_surface(int32_t w, int32_t h) {
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sk_imageinfo_t* info = sk_imageinfo_new(w, h, RGBA_8888_SK_COLORTYPE,
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PREMUL_SK_ALPHATYPE, NULL);
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sk_surface_t* result = sk_surface_new_raster(info, NULL);
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sk_imageinfo_delete(info);
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return result;
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}
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static void emit_png(const char* path, sk_surface_t* surface) {
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sk_image_t* image = sk_surface_new_image_snapshot(surface);
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sk_data_t* data = sk_image_encode(image);
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sk_image_unref(image);
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FILE* f = fopen(path, "wb");
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fwrite(sk_data_get_data(data), sk_data_get_size(data), 1, f);
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fclose(f);
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sk_data_unref(data);
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}
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void draw(sk_canvas_t* canvas) {
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sk_paint_t* fill = sk_paint_new();
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sk_paint_set_color(fill, sk_color_set_argb(0xFF, 0x00, 0x00, 0xFF));
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sk_canvas_draw_paint(canvas, fill);
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sk_paint_set_color(fill, sk_color_set_argb(0xFF, 0x00, 0xFF, 0xFF));
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sk_rect_t rect;
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rect.left = 100.0f;
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rect.top = 100.0f;
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rect.right = 540.0f;
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rect.bottom = 380.0f;
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sk_canvas_draw_rect(canvas, &rect, fill);
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sk_paint_t* stroke = sk_paint_new();
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sk_paint_set_color(stroke, sk_color_set_argb(0xFF, 0xFF, 0x00, 0x00));
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sk_paint_set_antialias(stroke, true);
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sk_paint_set_stroke(stroke, true);
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sk_paint_set_stroke_width(stroke, 5.0f);
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sk_path_t* path = sk_path_new();
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sk_path_move_to(path, 50.0f, 50.0f);
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sk_path_line_to(path, 590.0f, 50.0f);
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sk_path_cubic_to(path, -490.0f, 50.0f, 1130.0f, 430.0f, 50.0f, 430.0f);
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sk_path_line_to(path, 590.0f, 430.0f);
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sk_canvas_draw_path(canvas, path, stroke);
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sk_paint_set_color(fill, sk_color_set_argb(0x80, 0x00, 0xFF, 0x00));
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sk_rect_t rect2;
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rect2.left = 120.0f;
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rect2.top = 120.0f;
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rect2.right = 520.0f;
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rect2.bottom = 360.0f;
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sk_canvas_draw_oval(canvas, &rect2, fill);
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sk_path_delete(path);
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sk_paint_delete(stroke);
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sk_paint_delete(fill);
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}
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int main() {
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sk_surface_t* surface = make_surface(640, 480);
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sk_canvas_t* canvas = sk_surface_get_canvas(surface);
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draw(canvas);
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emit_png("skia-c-example.png", surface);
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sk_surface_unref(surface);
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return 0;
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}
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