98 lines
2.9 KiB
C++
98 lines
2.9 KiB
C++
// Copyright (c) 2014 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 "atom/browser/ui/views/submenu_button.h"
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#include "base/strings/string_util.h"
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#include "base/strings/utf_string_conversions.h"
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#include "ui/gfx/canvas.h"
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#include "ui/gfx/text_utils.h"
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#include "ui/views/controls/button/label_button_border.h"
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namespace atom {
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namespace {
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// Filter out the "&" in menu label.
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base::string16 FilterAccelerator(const base::string16& label) {
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base::string16 out;
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base::RemoveChars(label, base::ASCIIToUTF16("&").c_str(), &out);
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return out;
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}
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} // namespace
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SubmenuButton::SubmenuButton(views::ButtonListener* listener,
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const base::string16& title,
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views::MenuButtonListener* menu_button_listener)
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: views::MenuButton(FilterAccelerator(title),
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menu_button_listener, false),
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accelerator_(0),
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show_underline_(false),
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underline_start_(-1),
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underline_end_(-1),
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text_width_(0),
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text_height_(0),
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underline_color_(SK_ColorBLACK) {
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#if defined(OS_LINUX)
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// Dont' use native style border.
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SetBorder(std::move(CreateDefaultBorder()));
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#endif
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if (GetUnderlinePosition(title, &accelerator_, &underline_start_,
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&underline_end_))
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gfx::Canvas::SizeStringInt(GetText(), GetFontList(), &text_width_,
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&text_height_, 0, 0);
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}
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SubmenuButton::~SubmenuButton() {
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}
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void SubmenuButton::SetAcceleratorVisibility(bool visible) {
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if (visible == show_underline_)
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return;
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show_underline_ = visible;
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SchedulePaint();
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}
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void SubmenuButton::SetUnderlineColor(SkColor color) {
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underline_color_ = color;
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}
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void SubmenuButton::OnPaint(gfx::Canvas* canvas) {
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views::MenuButton::OnPaint(canvas);
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if (show_underline_ && (underline_start_ != underline_end_)) {
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int padding = (width() - text_width_) / 2;
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int underline_height = (height() + text_height_) / 2 - 2;
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canvas->DrawLine(gfx::Point(underline_start_ + padding, underline_height),
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gfx::Point(underline_end_ + padding, underline_height),
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underline_color_);
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}
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}
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bool SubmenuButton::GetUnderlinePosition(const base::string16& text,
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base::char16* accelerator,
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int* start, int* end) {
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int pos, span;
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base::string16 trimmed = gfx::RemoveAcceleratorChar(text, '&', &pos, &span);
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if (pos > -1 && span != 0) {
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*accelerator = base::ToUpperASCII(trimmed[pos]);
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GetCharacterPosition(trimmed, pos, start);
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GetCharacterPosition(trimmed, pos + span, end);
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return true;
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}
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return false;
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}
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void SubmenuButton::GetCharacterPosition(
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const base::string16& text, int index, int* pos) {
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int height;
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gfx::Canvas::SizeStringInt(text.substr(0, index), GetFontList(), pos, &height,
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0, 0);
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}
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} // namespace atom
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