| // Copyright 2018 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. |
| |
| #ifndef CHROME_BROWSER_UI_VIEWS_OMNIBOX_OMNIBOX_TEXT_VIEW_H_ |
| #define CHROME_BROWSER_UI_VIEWS_OMNIBOX_OMNIBOX_TEXT_VIEW_H_ |
| |
| #include <stddef.h> |
| |
| #include <memory> |
| |
| #include "base/macros.h" |
| #include "chrome/browser/ui/views/omnibox/omnibox_result_view.h" |
| #include "components/omnibox/browser/autocomplete_match.h" |
| #include "components/omnibox/browser/suggestion_answer.h" |
| #include "ui/gfx/font_list.h" |
| #include "ui/views/view.h" |
| |
| namespace gfx { |
| class Canvas; |
| class RenderText; |
| } // namespace gfx |
| |
| // A view containing a render text styled via search results. This differs from |
| // the general purpose views::Label class by having less general features (such |
| // as selection) and more specific features (such as suggestion answer styling). |
| class OmniboxTextView : public views::View { |
| public: |
| explicit OmniboxTextView(OmniboxResultView* result_view); |
| ~OmniboxTextView() override; |
| |
| // views::View. |
| gfx::Size CalculatePreferredSize() const override; |
| bool CanProcessEventsWithinSubtree() const override; |
| const char* GetClassName() const override; |
| int GetHeightForWidth(int width) const override; |
| void OnPaint(gfx::Canvas* canvas) override; |
| |
| // Applies given part's theme color to underlying render text. Using |
| // OmniboxPart::RESULTS_TEXT_DIMMED gives the gray used by Dim() in the past. |
| // This is called Apply* instead of Set* because the only state kept is in |
| // render_text, so call this after setting text with methods below. |
| void ApplyTextColor(OmniboxPart part); |
| |
| // Returns the render text, or an empty string if there is none. |
| const base::string16& text() const; |
| |
| // Sets the render text with default rendering for the given |text|. The |
| // |classifications| are used to style the text. An ImageLine incorporates |
| // both the text and the styling. |
| // |deemphasize| specifies whether to use a slightly smaller font than normal. |
| void SetText(const base::string16& text, bool deemphasize = false); |
| void SetText(const base::string16& text, |
| const ACMatchClassifications& classifications, |
| bool deemphasize = false); |
| void SetText(const SuggestionAnswer::ImageLine& line, |
| bool deemphasize = false); |
| |
| // Adds the "additional" and "status" text from |line|, if any. |
| void AppendExtraText(const SuggestionAnswer::ImageLine& line); |
| |
| // Get the height of one line of text. This is handy if the view might have |
| // multiple lines. |
| int GetLineHeight() const; |
| |
| // Reapplies text styling to the results text, based on the types of the match |
| // parts. |
| void ReapplyStyling(); |
| |
| // Creates a platform-approriate RenderText, sets its format to that of |
| // a suggestion and inserts (renders) the provided |text|. |
| std::unique_ptr<gfx::RenderText> CreateRenderText( |
| const base::string16& text) const; |
| |
| private: |
| // Adds text from an answer field to the render text using appropriate style. |
| // A prefix (such as separating space) may also be prepended to field text. |
| void AppendText(const SuggestionAnswer::TextField& field, |
| const base::string16& prefix); |
| |
| // Updates the cached maximum line height. |
| void UpdateLineHeight(); |
| |
| // To get color values. |
| OmniboxResultView* result_view_; |
| |
| // Font settings for this view. |
| int font_height_; |
| |
| // Whether to apply deemphasized font instead of primary omnibox font. |
| // TODO(orinj): Use a more general ChromeTextContext for flexibility, or |
| // otherwise clean up & unify the different ways of selecting fonts & styles. |
| bool use_deemphasized_font_; |
| |
| // Whether to wrap lines if the width is too narrow for the whole string. |
| bool wrap_text_lines_; |
| |
| // The primary data for this class. |
| std::unique_ptr<gfx::RenderText> render_text_; |
| // The classifications most recently passed to SetText. Used to exit |
| // early instead of setting text when the text and classifications |
| // match the current state of the view. |
| std::unique_ptr<ACMatchClassifications> cached_classifications_; |
| |
| DISALLOW_COPY_AND_ASSIGN(OmniboxTextView); |
| }; |
| |
| #endif // CHROME_BROWSER_UI_VIEWS_OMNIBOX_OMNIBOX_TEXT_VIEW_H_ |