| // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "views/controls/link.h" |
| |
| #include "build/build_config.h" |
| |
| #if defined(TOOLKIT_USES_GTK) |
| #include <gdk/gdk.h> |
| #endif |
| |
| #include "base/logging.h" |
| #include "base/utf_string_conversions.h" |
| #include "ui/base/accessibility/accessible_view_state.h" |
| #include "ui/base/keycodes/keyboard_codes.h" |
| #include "ui/gfx/color_utils.h" |
| #include "ui/gfx/font.h" |
| #include "views/controls/link_listener.h" |
| #include "views/events/event.h" |
| |
| #if defined(TOOLKIT_USES_GTK) |
| #include "ui/gfx/gtk_util.h" |
| #endif |
| |
| #if defined(USE_AURA) |
| #include "ui/aura/cursor.h" |
| #endif |
| |
| namespace views { |
| |
| const char Link::kViewClassName[] = "views/Link"; |
| |
| Link::Link() : Label(string16()) { |
| Init(); |
| } |
| |
| Link::Link(const string16& title) : Label(title) { |
| Init(); |
| } |
| |
| Link::~Link() { |
| } |
| |
| void Link::OnEnabledChanged() { |
| RecalculateFont(); |
| View::OnEnabledChanged(); |
| } |
| |
| std::string Link::GetClassName() const { |
| return kViewClassName; |
| } |
| |
| gfx::NativeCursor Link::GetCursor(const MouseEvent& event) { |
| if (!IsEnabled()) |
| return gfx::kNullCursor; |
| #if defined(USE_AURA) |
| return aura::kCursorHand; |
| #elif defined(OS_WIN) |
| static HCURSOR g_hand_cursor = LoadCursor(NULL, IDC_HAND); |
| return g_hand_cursor; |
| #elif defined(TOOLKIT_USES_GTK) |
| return gfx::GetCursor(GDK_HAND2); |
| #endif |
| } |
| |
| bool Link::HitTest(const gfx::Point& l) const { |
| // We need to allow clicks on the link. So we override the implementation in |
| // Label and use the default implementation of View. |
| return View::HitTest(l); |
| } |
| |
| bool Link::OnMousePressed(const MouseEvent& event) { |
| if (!IsEnabled() || |
| (!event.IsLeftMouseButton() && !event.IsMiddleMouseButton())) |
| return false; |
| SetPressed(true); |
| return true; |
| } |
| |
| bool Link::OnMouseDragged(const MouseEvent& event) { |
| SetPressed(IsEnabled() && |
| (event.IsLeftMouseButton() || event.IsMiddleMouseButton()) && |
| HitTest(event.location())); |
| return true; |
| } |
| |
| void Link::OnMouseReleased(const MouseEvent& event) { |
| // Change the highlight first just in case this instance is deleted |
| // while calling the controller |
| OnMouseCaptureLost(); |
| if (IsEnabled() && |
| (event.IsLeftMouseButton() || event.IsMiddleMouseButton()) && |
| HitTest(event.location())) { |
| // Focus the link on click. |
| RequestFocus(); |
| |
| if (listener_) |
| listener_->LinkClicked(this, event.flags()); |
| } |
| } |
| |
| void Link::OnMouseCaptureLost() { |
| SetPressed(false); |
| } |
| |
| bool Link::OnKeyPressed(const KeyEvent& event) { |
| bool activate = ((event.key_code() == ui::VKEY_SPACE) || |
| (event.key_code() == ui::VKEY_RETURN)); |
| if (!activate) |
| return false; |
| |
| SetPressed(false); |
| |
| // Focus the link on key pressed. |
| RequestFocus(); |
| |
| if (listener_) |
| listener_->LinkClicked(this, event.flags()); |
| |
| return true; |
| } |
| |
| bool Link::SkipDefaultKeyEventProcessing(const KeyEvent& event) { |
| // Make sure we don't process space or enter as accelerators. |
| return (event.key_code() == ui::VKEY_SPACE) || |
| (event.key_code() == ui::VKEY_RETURN); |
| } |
| |
| void Link::GetAccessibleState(ui::AccessibleViewState* state) { |
| Label::GetAccessibleState(state); |
| state->role = ui::AccessibilityTypes::ROLE_LINK; |
| } |
| |
| void Link::SetFont(const gfx::Font& font) { |
| Label::SetFont(font); |
| RecalculateFont(); |
| } |
| |
| void Link::SetEnabledColor(const SkColor& color) { |
| requested_enabled_color_ = color; |
| if (!pressed_) |
| Label::SetEnabledColor(requested_enabled_color_); |
| } |
| |
| void Link::SetPressedColor(const SkColor& color) { |
| requested_pressed_color_ = color; |
| if (pressed_) |
| Label::SetEnabledColor(requested_pressed_color_); |
| } |
| |
| void Link::Init() { |
| static bool initialized = false; |
| static SkColor kDefaultEnabledColor; |
| static SkColor kDefaultDisabledColor; |
| static SkColor kDefaultPressedColor; |
| if (!initialized) { |
| #if defined(OS_WIN) |
| kDefaultEnabledColor = color_utils::GetSysSkColor(COLOR_HOTLIGHT); |
| kDefaultDisabledColor = color_utils::GetSysSkColor(COLOR_WINDOWTEXT); |
| kDefaultPressedColor = SkColorSetRGB(200, 0, 0); |
| #else |
| // TODO(beng): source from theme provider. |
| kDefaultEnabledColor = SkColorSetRGB(0, 51, 153); |
| kDefaultDisabledColor = SK_ColorBLACK; |
| kDefaultPressedColor = SK_ColorRED; |
| #endif |
| |
| initialized = true; |
| } |
| |
| listener_ = NULL; |
| pressed_ = false; |
| SetEnabledColor(kDefaultEnabledColor); |
| SetDisabledColor(kDefaultDisabledColor); |
| SetPressedColor(kDefaultPressedColor); |
| RecalculateFont(); |
| set_focusable(true); |
| } |
| |
| void Link::SetPressed(bool pressed) { |
| if (pressed_ != pressed) { |
| pressed_ = pressed; |
| Label::SetEnabledColor(pressed_ ? |
| requested_pressed_color_ : requested_enabled_color_); |
| RecalculateFont(); |
| SchedulePaint(); |
| } |
| } |
| |
| void Link::RecalculateFont() { |
| // The font should be underlined iff the link is enabled. |
| if (IsEnabled() == !(font().GetStyle() & gfx::Font::UNDERLINED)) { |
| Label::SetFont(font().DeriveFont(0, IsEnabled() ? |
| (font().GetStyle() | gfx::Font::UNDERLINED) : |
| (font().GetStyle() & ~gfx::Font::UNDERLINED))); |
| } |
| } |
| |
| } // namespace views |