109 lines
2.9 KiB
C++
109 lines
2.9 KiB
C++
// Copyright (c) 2019 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/browser/ui/gtk_util.h"
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#include <gdk/gdk.h>
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#include <gtk/gtk.h>
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#include <stdint.h>
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#include <string>
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#include "base/no_destructor.h"
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#include "base/strings/string_number_conversions.h"
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#include "electron/electron_gtk_stubs.h"
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#include "third_party/skia/include/core/SkBitmap.h"
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#include "third_party/skia/include/core/SkColor.h"
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#include "third_party/skia/include/core/SkUnPreMultiply.h"
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#include "ui/gtk/gtk_compat.h" // nogncheck
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// The following utilities are pulled from
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// https://source.chromium.org/chromium/chromium/src/+/main:ui/gtk/select_file_dialog_linux_gtk.cc;l=44-75;drc=a03ba4ca94f75531207c3ea832d6a605cde77394
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namespace gtk_util {
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namespace {
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const char* GettextPackage() {
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static base::NoDestructor<std::string> gettext_package(
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"gtk" + base::NumberToString(gtk::GtkVersion().components()[0]) + "0");
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return gettext_package->c_str();
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}
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const char* GtkGettext(const char* str) {
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return g_dgettext(GettextPackage(), str);
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}
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} // namespace
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const char* GetCancelLabel() {
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static const char* cancel = GtkGettext("_Cancel");
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return cancel;
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}
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const char* GetOpenLabel() {
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static const char* open = GtkGettext("_Open");
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return open;
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}
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const char* GetSaveLabel() {
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static const char* save = GtkGettext("_Save");
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return save;
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}
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const char* GetOkLabel() {
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static const char* ok = GtkGettext("_Ok");
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return ok;
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}
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const char* GetNoLabel() {
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static const char* no = GtkGettext("_No");
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return no;
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}
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const char* GetYesLabel() {
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static const char* yes = GtkGettext("_Yes");
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return yes;
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}
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GdkPixbuf* GdkPixbufFromSkBitmap(const SkBitmap& bitmap) {
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if (bitmap.isNull())
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return nullptr;
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int width = bitmap.width();
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int height = bitmap.height();
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GdkPixbuf* pixbuf =
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gdk_pixbuf_new(GDK_COLORSPACE_RGB, // The only colorspace gtk supports.
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TRUE, // There is an alpha channel.
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8, width, height);
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// SkBitmaps are premultiplied, we need to unpremultiply them.
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const int kBytesPerPixel = 4;
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uint8_t* divided = gdk_pixbuf_get_pixels(pixbuf);
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for (int y = 0, i = 0; y < height; y++) {
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for (int x = 0; x < width; x++) {
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uint32_t pixel = bitmap.getAddr32(0, y)[x];
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int alpha = SkColorGetA(pixel);
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if (alpha != 0 && alpha != 255) {
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SkColor unmultiplied = SkUnPreMultiply::PMColorToColor(pixel);
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divided[i + 0] = SkColorGetR(unmultiplied);
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divided[i + 1] = SkColorGetG(unmultiplied);
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divided[i + 2] = SkColorGetB(unmultiplied);
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divided[i + 3] = alpha;
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} else {
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divided[i + 0] = SkColorGetR(pixel);
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divided[i + 1] = SkColorGetG(pixel);
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divided[i + 2] = SkColorGetB(pixel);
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divided[i + 3] = alpha;
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}
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i += kBytesPerPixel;
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}
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}
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return pixbuf;
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}
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} // namespace gtk_util
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