89 lines
2.8 KiB
Text
89 lines
2.8 KiB
Text
// Copyright (c) 2015 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include "shell/common/api/electron_api_native_image.h"
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#include <string>
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#include <vector>
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#import <Cocoa/Cocoa.h>
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#include "base/strings/sys_string_conversions.h"
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#include "gin/arguments.h"
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#include "ui/gfx/color_utils.h"
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#include "ui/gfx/image/image.h"
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#include "ui/gfx/image/image_skia.h"
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#include "ui/gfx/image/image_skia_operations.h"
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namespace electron {
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namespace api {
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NSData* bufferFromNSImage(NSImage* image) {
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CGImageRef ref = [image CGImageForProposedRect:nil context:nil hints:nil];
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NSBitmapImageRep* rep = [[NSBitmapImageRep alloc] initWithCGImage:ref];
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[rep setSize:[image size]];
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return [rep representationUsingType:NSPNGFileType
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properties:[[NSDictionary alloc] init]];
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}
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double safeShift(double in, double def) {
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if (in >= 0 || in <= 1 || in == def)
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return in;
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return def;
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}
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gin::Handle<NativeImage> NativeImage::CreateFromNamedImage(gin::Arguments* args,
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std::string name) {
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@autoreleasepool {
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std::vector<double> hsl_shift;
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// The string representations of NSImageNames don't match the strings
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// themselves; they instead follow the following pattern:
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// * NSImageNameActionTemplate -> "NSActionTemplate"
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// * NSImageNameMultipleDocuments -> "NSMultipleDocuments"
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// To account for this, we strip out "ImageName" from the passed string.
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std::string to_remove("ImageName");
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size_t pos = name.find(to_remove);
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if (pos != std::string::npos) {
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name.erase(pos, to_remove.length());
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}
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NSImage* image = [NSImage imageNamed:base::SysUTF8ToNSString(name)];
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if (!image.valid) {
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return CreateEmpty(args->isolate());
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}
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NSData* png_data = bufferFromNSImage(image);
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if (args->GetNext(&hsl_shift) && hsl_shift.size() == 3) {
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gfx::Image gfx_image = gfx::Image::CreateFrom1xPNGBytes(
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reinterpret_cast<const unsigned char*>((char*)[png_data bytes]),
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[png_data length]);
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color_utils::HSL shift = {safeShift(hsl_shift[0], -1),
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safeShift(hsl_shift[1], 0.5),
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safeShift(hsl_shift[2], 0.5)};
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png_data = bufferFromNSImage(
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gfx::Image(gfx::ImageSkiaOperations::CreateHSLShiftedImage(
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gfx_image.AsImageSkia(), shift))
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.AsNSImage());
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}
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return CreateFromPNG(args->isolate(), (char*)[png_data bytes],
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[png_data length]);
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}
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}
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void NativeImage::SetTemplateImage(bool setAsTemplate) {
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[image_.AsNSImage() setTemplate:setAsTemplate];
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}
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bool NativeImage::IsTemplateImage() {
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return [image_.AsNSImage() isTemplate];
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}
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} // namespace api
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} // namespace electron
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