diff options
Diffstat (limited to 'chromium/ui/views/widget/tooltip_manager_win.cc')
| -rw-r--r-- | chromium/ui/views/widget/tooltip_manager_win.cc | 357 |
1 files changed, 0 insertions, 357 deletions
diff --git a/chromium/ui/views/widget/tooltip_manager_win.cc b/chromium/ui/views/widget/tooltip_manager_win.cc deleted file mode 100644 index f9965f9cc37..00000000000 --- a/chromium/ui/views/widget/tooltip_manager_win.cc +++ /dev/null @@ -1,357 +0,0 @@ -// Copyright (c) 2012 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 "ui/views/widget/tooltip_manager_win.h" - -#include <windowsx.h> - -#include <limits> -#include <vector> - -#include "base/bind.h" -#include "base/i18n/rtl.h" -#include "base/logging.h" -#include "base/message_loop/message_loop.h" -#include "base/strings/string_split.h" -#include "base/strings/string_util.h" -#include "base/win/scoped_hdc.h" -#include "base/win/scoped_select_object.h" -#include "ui/base/l10n/l10n_util_win.h" -#include "ui/gfx/font_list.h" -#include "ui/gfx/screen.h" -#include "ui/gfx/text_elider.h" -#include "ui/gfx/text_utils.h" -#include "ui/gfx/win/dpi.h" -#include "ui/gfx/win/hwnd_util.h" -#include "ui/gfx/win/scoped_set_map_mode.h" -#include "ui/views/view.h" -#include "ui/views/widget/monitor_win.h" -#include "ui/views/widget/widget.h" - -namespace views { - -namespace { - -static int tooltip_height_ = 0; - -// Maximum number of lines we allow in the tooltip. -const size_t kMaxLines = 6; - -// Trims the tooltip to fit, setting |text| to the clipped result, |max_width| -// to the width (in pixels) of the clipped text and |line_count| to the number -// of lines of text in the tooltip. |available_width| gives the space available -// for the tooltip. -void TrimTooltipToFit(const gfx::FontList& font_list, - int available_width, - base::string16* text, - int* max_width, - int* line_count) { - *max_width = 0; - *line_count = 0; - - TooltipManager::TrimTooltipText(text); - - // Split the string into at most kMaxLines lines. - std::vector<base::string16> lines; - base::SplitString(*text, '\n', &lines); - if (lines.size() > kMaxLines) - lines.resize(kMaxLines); - *line_count = static_cast<int>(lines.size()); - - // Format each line to fit. - base::string16 result; - for (std::vector<base::string16>::iterator i = lines.begin(); - i != lines.end(); ++i) { - base::string16 elided_text = - gfx::ElideText(*i, font_list, available_width, gfx::ELIDE_AT_END); - *max_width = std::max(*max_width, - gfx::GetStringWidth(elided_text, font_list)); - if (!result.empty()) - result.push_back('\n'); - result.append(elided_text); - } - *text = result; -} - -} // namespace - -// static -int TooltipManager::GetTooltipHeight() { - DCHECK_GT(tooltip_height_, 0); - return tooltip_height_; -} - -static gfx::Font DetermineDefaultFont() { - HWND window = CreateWindowEx( - WS_EX_TRANSPARENT | l10n_util::GetExtendedTooltipStyles(), - TOOLTIPS_CLASS, NULL, 0 , 0, 0, 0, 0, NULL, NULL, NULL, NULL); - if (!window) - return gfx::Font(); - HFONT hfont = reinterpret_cast<HFONT>(SendMessage(window, WM_GETFONT, 0, 0)); - gfx::Font font = hfont ? gfx::Font(hfont) : gfx::Font(); - DestroyWindow(window); - return font; -} - -TooltipManagerWin::TooltipManagerWin(Widget* widget) - : widget_(widget), - tooltip_hwnd_(NULL), - last_mouse_pos_(-1, -1), - tooltip_showing_(false), - last_tooltip_view_(NULL), - last_view_out_of_sync_(false), - tooltip_width_(0) { - DCHECK(widget); - DCHECK(widget->GetNativeView()); -} - -TooltipManagerWin::~TooltipManagerWin() { - if (tooltip_hwnd_) - DestroyWindow(tooltip_hwnd_); -} - -bool TooltipManagerWin::Init() { - DCHECK(!tooltip_hwnd_); - // Create the tooltip control. - tooltip_hwnd_ = CreateWindowEx( - WS_EX_TRANSPARENT | l10n_util::GetExtendedTooltipStyles(), - TOOLTIPS_CLASS, NULL, TTS_NOPREFIX, 0, 0, 0, 0, - GetParent(), NULL, NULL, NULL); - if (!tooltip_hwnd_) - return false; - - l10n_util::AdjustUIFontForWindow(tooltip_hwnd_); - - // This effectively turns off clipping of tooltips. We need this otherwise - // multi-line text (\r\n) won't work right. The size doesn't really matter - // (just as long as its bigger than the monitor's width) as we clip to the - // screen size before rendering. - SendMessage(tooltip_hwnd_, TTM_SETMAXTIPWIDTH, 0, - std::numeric_limits<int16>::max()); - - // Add one tool that is used for all tooltips. - toolinfo_.cbSize = sizeof(toolinfo_); - toolinfo_.uFlags = TTF_TRANSPARENT | TTF_IDISHWND; - toolinfo_.hwnd = GetParent(); - toolinfo_.uId = reinterpret_cast<UINT_PTR>(GetParent()); - // Setting this tells windows to call GetParent() back (using a WM_NOTIFY - // message) for the actual tooltip contents. - toolinfo_.lpszText = LPSTR_TEXTCALLBACK; - toolinfo_.lpReserved = NULL; - SetRectEmpty(&toolinfo_.rect); - SendMessage(tooltip_hwnd_, TTM_ADDTOOL, 0, (LPARAM)&toolinfo_); - return true; -} - -gfx::NativeView TooltipManagerWin::GetParent() { - return widget_->GetNativeView(); -} - -const gfx::FontList& TooltipManagerWin::GetFontList() const { - static gfx::FontList* font_list = NULL; - if (!font_list) - font_list = new gfx::FontList(DetermineDefaultFont()); - return *font_list; -} - -void TooltipManagerWin::UpdateTooltip() { - // Set last_view_out_of_sync_ to indicate the view is currently out of sync. - // This doesn't update the view under the mouse immediately as it may cause - // timing problems. - last_view_out_of_sync_ = true; - last_tooltip_view_ = NULL; - // Hide the tooltip. - SendMessage(tooltip_hwnd_, TTM_POP, 0, 0); -} - -void TooltipManagerWin::TooltipTextChanged(View* view) { - if (view == last_tooltip_view_) - UpdateTooltip(last_mouse_pos_); -} - -LRESULT TooltipManagerWin::OnNotify(int w_param, - NMHDR* l_param, - bool* handled) { - *handled = false; - if (l_param->hwndFrom != tooltip_hwnd_) - return 0; - - switch (l_param->code) { - case TTN_GETDISPINFO: { - if (last_view_out_of_sync_) { - // View under the mouse is out of sync, determine it now. - View* root_view = widget_->GetRootView(); - last_tooltip_view_ = - root_view->GetTooltipHandlerForPoint(last_mouse_pos_); - last_view_out_of_sync_ = false; - } - // Tooltip control is asking for the tooltip to display. - NMTTDISPINFOW* tooltip_info = - reinterpret_cast<NMTTDISPINFOW*>(l_param); - // Initialize the string, if we have a valid tooltip the string will - // get reset below. - tooltip_info->szText[0] = TEXT('\0'); - tooltip_text_.clear(); - tooltip_info->lpszText = NULL; - clipped_text_.clear(); - if (last_tooltip_view_ != NULL) { - tooltip_text_.clear(); - // Mouse is over a View, ask the View for its tooltip. - gfx::Point view_loc = last_mouse_pos_; - View::ConvertPointToTarget(widget_->GetRootView(), - last_tooltip_view_, &view_loc); - if (last_tooltip_view_->GetTooltipText(view_loc, &tooltip_text_) && - !tooltip_text_.empty()) { - // View has a valid tip, copy it into TOOLTIPINFO. - clipped_text_ = tooltip_text_; - gfx::Point screen_loc = last_mouse_pos_; - View::ConvertPointToScreen(widget_->GetRootView(), &screen_loc); - TrimTooltipToFit( - GetFontList(), - GetMaxWidth(screen_loc.x(), screen_loc.y(), - widget_->GetNativeView()), - &clipped_text_, &tooltip_width_, &line_count_); - // Adjust the clipped tooltip text for locale direction. - base::i18n::AdjustStringForLocaleDirection(&clipped_text_); - tooltip_info->lpszText = const_cast<WCHAR*>(clipped_text_.c_str()); - } else { - tooltip_text_.clear(); - } - } - *handled = true; - return 0; - } - case TTN_POP: - tooltip_showing_ = false; - *handled = true; - return 0; - case TTN_SHOW: { - *handled = true; - tooltip_showing_ = true; - // The tooltip is about to show, allow the view to position it - gfx::Point text_origin; - if (tooltip_height_ == 0) - tooltip_height_ = CalcTooltipHeight(); - gfx::Point view_loc = last_mouse_pos_; - View::ConvertPointToTarget(widget_->GetRootView(), - last_tooltip_view_, &view_loc); - if (last_tooltip_view_->GetTooltipTextOrigin(view_loc, &text_origin) && - SetTooltipPosition(text_origin.x(), text_origin.y())) { - // Return true, otherwise the rectangle we specified is ignored. - return TRUE; - } - return 0; - } - default: - // Fall through. - break; - } - return 0; -} - -bool TooltipManagerWin::SetTooltipPosition(int text_x, int text_y) { - // NOTE: this really only tests that the y location fits on screen, but that - // is good enough for our usage. - - // Calculate the bounds the tooltip will get. - gfx::Point view_loc; - View::ConvertPointToScreen(last_tooltip_view_, &view_loc); - view_loc = gfx::win::DIPToScreenPoint(view_loc); - RECT bounds = { view_loc.x() + text_x, - view_loc.y() + text_y, - view_loc.x() + text_x + tooltip_width_, - view_loc.y() + line_count_ * GetTooltipHeight() }; - SendMessage(tooltip_hwnd_, TTM_ADJUSTRECT, TRUE, (LPARAM)&bounds); - - // Make sure the rectangle completely fits on the current monitor. If it - // doesn't, return false so that windows positions the tooltip at the - // default location. - gfx::Rect monitor_bounds = - views::GetMonitorBoundsForRect(gfx::Rect(bounds.left, bounds.right, - 0, 0)); - if (!monitor_bounds.Contains(gfx::Rect(bounds))) { - return false; - } - - ::SetWindowPos(tooltip_hwnd_, NULL, bounds.left, bounds.top, 0, 0, - SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOSIZE); - return true; -} - -int TooltipManagerWin::CalcTooltipHeight() { - // Ask the tooltip for its font. - int height; - HFONT hfont = reinterpret_cast<HFONT>( - SendMessage(tooltip_hwnd_, WM_GETFONT, 0, 0)); - if (hfont != NULL) { - base::win::ScopedGetDC dc(tooltip_hwnd_); - base::win::ScopedSelectObject font(dc, hfont); - gfx::ScopedSetMapMode mode(dc, MM_TEXT); - TEXTMETRIC font_metrics; - GetTextMetrics(dc, &font_metrics); - height = font_metrics.tmHeight; - } else { - // Tooltip is using the system font. Use gfx::Font, which should pick - // up the system font. - height = gfx::Font().GetHeight(); - } - // Get the margins from the tooltip - RECT tooltip_margin; - SendMessage(tooltip_hwnd_, TTM_GETMARGIN, 0, (LPARAM)&tooltip_margin); - return height + tooltip_margin.top + tooltip_margin.bottom; -} - -void TooltipManagerWin::UpdateTooltip(const gfx::Point& mouse_pos) { - View* root_view = widget_->GetRootView(); - View* view = root_view->GetTooltipHandlerForPoint(mouse_pos); - if (view != last_tooltip_view_) { - // NOTE: This *must* be sent regardless of the visibility of the tooltip. - // It triggers Windows to ask for the tooltip again. - SendMessage(tooltip_hwnd_, TTM_POP, 0, 0); - last_tooltip_view_ = view; - } else if (last_tooltip_view_ != NULL) { - // Tooltip is showing, and mouse is over the same view. See if the tooltip - // text has changed. - gfx::Point view_point = mouse_pos; - View::ConvertPointToTarget(root_view, last_tooltip_view_, &view_point); - string16 new_tooltip_text; - bool has_tooltip_text = - last_tooltip_view_->GetTooltipText(view_point, &new_tooltip_text); - if (!has_tooltip_text || (new_tooltip_text != tooltip_text_)) { - // The text has changed, hide the popup. - SendMessage(tooltip_hwnd_, TTM_POP, 0, 0); - if (has_tooltip_text && !new_tooltip_text.empty() && tooltip_showing_) { - // New text is valid, show the popup. - SendMessage(tooltip_hwnd_, TTM_POPUP, 0, 0); - } - } - } -} - -void TooltipManagerWin::OnMouse(UINT u_msg, WPARAM w_param, LPARAM l_param) { - gfx::Point mouse_pos_in_pixels(l_param); - gfx::Point mouse_pos = gfx::win::ScreenToDIPPoint(mouse_pos_in_pixels); - - if (u_msg >= WM_NCMOUSEMOVE && u_msg <= WM_NCXBUTTONDBLCLK) { - // NC message coordinates are in screen coordinates. - POINT temp = mouse_pos_in_pixels.ToPOINT(); - ::MapWindowPoints(HWND_DESKTOP, GetParent(), &temp, 1); - mouse_pos_in_pixels.SetPoint(temp.x, temp.y); - mouse_pos = gfx::win::ScreenToDIPPoint(mouse_pos_in_pixels); - } - - if (u_msg != WM_MOUSEMOVE || last_mouse_pos_ != mouse_pos) { - last_mouse_pos_ = mouse_pos; - UpdateTooltip(mouse_pos); - } - // Forward the message onto the tooltip. - MSG msg; - msg.hwnd = GetParent(); - msg.message = u_msg; - msg.wParam = w_param; - msg.lParam = l_param; - SendMessage(tooltip_hwnd_, TTM_RELAYEVENT, 0, (LPARAM)&msg); -} - -} // namespace views |