1/*
2 * This file is part of the WebKit project.
3 *
4 * Copyright (C) 2006 Apple Computer, Inc.
5 * Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com
6 * Copyright (C) 2007 Holger Hans Peter Freyther
7 * Copyright (C) 2007 Alp Toker <alp@atoker.com>
8 * Copyright (C) 2008 INdT - Instituto Nokia de Tecnologia
9 * Copyright (C) 2009-2010 ProFUSION embedded systems
10 * Copyright (C) 2009-2010 Samsung Electronics
11 * All rights reserved.
12 *
13 * This library is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU Library General Public
15 * License as published by the Free Software Foundation; either
16 * version 2 of the License, or (at your option) any later version.
17 *
18 * This library is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
21 * Library General Public License for more details.
22 *
23 * You should have received a copy of the GNU Library General Public License
24 * along with this library; see the file COPYING.LIB.  If not, write to
25 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
26 * Boston, MA 02110-1301, USA.
27 *
28 */
29
30#ifndef RenderThemeEfl_h
31#define RenderThemeEfl_h
32
33#if ENABLE(VIDEO)
34#include "MediaControlElements.h"
35#endif
36#include "RenderTheme.h"
37
38#include <Eina.h>
39#include <cairo.h>
40#include <wtf/efl/RefPtrEfl.h>
41
42namespace WebCore {
43
44enum FormType { // KEEP IN SYNC WITH edjeGroupFromFormType()
45    Button,
46    RadioButton,
47    TextField,
48    CheckBox,
49    ComboBox,
50#if ENABLE(PROGRESS_ELEMENT)
51    ProgressBar,
52#endif
53    SearchField,
54    SearchFieldDecoration,
55    SearchFieldResultsButton,
56    SearchFieldResultsDecoration,
57    SearchFieldCancelButton,
58    SliderVertical,
59    SliderHorizontal,
60    SliderThumbVertical,
61    SliderThumbHorizontal,
62#if ENABLE(VIDEO)
63    PlayPauseButton,
64    MuteUnMuteButton,
65    SeekForwardButton,
66    SeekBackwardButton,
67    FullScreenButton,
68#endif
69#if ENABLE(VIDEO_TRACK)
70    ToggleCaptionsButton,
71#endif
72    Spinner,
73    FormTypeLast
74};
75
76class RenderThemeEfl : public RenderTheme {
77private:
78    explicit RenderThemeEfl(Page*);
79    ~RenderThemeEfl();
80
81public:
82    static PassRefPtr<RenderTheme> create(Page*);
83
84    // A method asking if the theme's controls actually care about redrawing when hovered.
85    virtual bool supportsHover(const RenderStyle*) const { return true; }
86
87    // A method asking if the theme is able to draw the focus ring.
88    virtual bool supportsFocusRing(const RenderStyle*) const;
89
90    // A method asking if the control changes its tint when the window has focus or not.
91    virtual bool controlSupportsTints(const RenderObject*) const;
92
93    // A general method asking if any control tinting is supported at all.
94    virtual bool supportsControlTints() const { return true; }
95
96    // A general method asking if foreground colors of selection are supported.
97    virtual bool supportsSelectionForegroundColors() const;
98
99    // A method to obtain the baseline position for a "leaf" control. This will only be used if a baseline
100    // position cannot be determined by examining child content. Checkboxes and radio buttons are examples of
101    // controls that need to do this.
102    virtual int baselinePosition(const RenderObject*) const;
103
104    virtual Color platformActiveSelectionBackgroundColor() const;
105    virtual Color platformInactiveSelectionBackgroundColor() const;
106    virtual Color platformActiveSelectionForegroundColor() const;
107    virtual Color platformInactiveSelectionForegroundColor() const;
108    virtual Color platformFocusRingColor() const;
109
110    // Set platform colors; remember to call platformColorDidChange after.
111    void setColorFromThemeClass(const char* colorClass);
112
113    void setButtonTextColor(int foreR, int foreG, int foreB, int foreA, int backR, int backG, int backB, int backA);
114    void setComboTextColor(int foreR, int foreG, int foreB, int foreA, int backR, int backG, int backB, int backA);
115    void setEntryTextColor(int foreR, int foreG, int foreB, int foreA, int backR, int backG, int backB, int backA);
116    void setSearchTextColor(int foreR, int foreG, int foreB, int foreA, int backR, int backG, int backB, int backA);
117
118    void adjustSizeConstraints(RenderStyle*, FormType) const;
119
120    // System fonts.
121    virtual void systemFont(int propId, FontDescription&) const;
122
123    virtual void adjustCheckboxStyle(StyleResolver*, RenderStyle*, Element*) const;
124    virtual bool paintCheckbox(RenderObject*, const PaintInfo&, const IntRect&);
125
126    virtual void adjustRadioStyle(StyleResolver*, RenderStyle*, Element*) const;
127    virtual bool paintRadio(RenderObject*, const PaintInfo&, const IntRect&);
128
129    virtual void adjustButtonStyle(StyleResolver*, RenderStyle*, Element*) const;
130    virtual bool paintButton(RenderObject*, const PaintInfo&, const IntRect&);
131
132    virtual void adjustTextFieldStyle(StyleResolver*, RenderStyle*, Element*) const;
133    virtual bool paintTextField(RenderObject*, const PaintInfo&, const IntRect&);
134
135    virtual void adjustTextAreaStyle(StyleResolver*, RenderStyle*, Element*) const;
136    virtual bool paintTextArea(RenderObject*, const PaintInfo&, const IntRect&);
137
138    virtual void adjustMenuListStyle(StyleResolver*, RenderStyle*, Element*) const;
139    virtual bool paintMenuList(RenderObject*, const PaintInfo&, const IntRect&);
140
141    virtual void adjustMenuListButtonStyle(StyleResolver*, RenderStyle*, Element*) const;
142    virtual bool paintMenuListButton(RenderObject*, const PaintInfo&, const IntRect&);
143
144    virtual void adjustSearchFieldResultsDecorationStyle(StyleResolver*, RenderStyle*, Element*) const;
145    virtual bool paintSearchFieldResultsDecoration(RenderObject*, const PaintInfo&, const IntRect&);
146
147    virtual void adjustSearchFieldDecorationStyle(StyleResolver*, RenderStyle*, Element*) const;
148    virtual bool paintSearchFieldDecoration(RenderObject*, const PaintInfo&, const IntRect&);
149
150    virtual void adjustSearchFieldStyle(StyleResolver*, RenderStyle*, Element*) const;
151    virtual bool paintSearchField(RenderObject*, const PaintInfo&, const IntRect&);
152
153    virtual void adjustSearchFieldResultsButtonStyle(StyleResolver*, RenderStyle*, Element*) const;
154    virtual bool paintSearchFieldResultsButton(RenderObject*, const PaintInfo&, const IntRect&);
155
156    virtual void adjustSearchFieldCancelButtonStyle(StyleResolver*, RenderStyle*, Element*) const;
157    virtual bool paintSearchFieldCancelButton(RenderObject*, const PaintInfo&, const IntRect&);
158
159    virtual void adjustSliderTrackStyle(StyleResolver*, RenderStyle*, Element*) const;
160    virtual bool paintSliderTrack(RenderObject*, const PaintInfo&, const IntRect&);
161
162    virtual void adjustSliderThumbStyle(StyleResolver*, RenderStyle*, Element*) const;
163
164    virtual void adjustSliderThumbSize(RenderStyle*, Element*) const;
165
166#if ENABLE(DATALIST_ELEMENT)
167    virtual IntSize sliderTickSize() const OVERRIDE;
168    virtual int sliderTickOffsetFromTrackCenter() const OVERRIDE;
169    virtual LayoutUnit sliderTickSnappingThreshold() const OVERRIDE;
170#endif
171
172    virtual bool supportsDataListUI(const AtomicString&) const OVERRIDE;
173
174    virtual bool paintSliderThumb(RenderObject*, const PaintInfo&, const IntRect&);
175
176    virtual void adjustInnerSpinButtonStyle(StyleResolver*, RenderStyle*, Element*) const;
177    virtual bool paintInnerSpinButton(RenderObject*, const PaintInfo&, const IntRect&);
178
179    static void setDefaultFontSize(int fontsize);
180
181#if ENABLE(PROGRESS_ELEMENT)
182    virtual void adjustProgressBarStyle(StyleResolver*, RenderStyle*, Element*) const;
183    virtual bool paintProgressBar(RenderObject*, const PaintInfo&, const IntRect&);
184    virtual double animationRepeatIntervalForProgressBar(RenderProgress*) const;
185    virtual double animationDurationForProgressBar(RenderProgress*) const;
186#endif
187
188#if ENABLE(VIDEO)
189    virtual String extraMediaControlsStyleSheet();
190#if ENABLE(FULLSCREEN_API)
191    virtual String extraFullScreenStyleSheet();
192#endif
193    virtual String formatMediaControlsCurrentTime(float currentTime, float duration) const;
194    virtual bool hasOwnDisabledStateHandlingFor(ControlPart) const;
195
196    virtual bool paintMediaFullscreenButton(RenderObject*, const PaintInfo&, const IntRect&);
197    virtual bool paintMediaPlayButton(RenderObject*, const PaintInfo&, const IntRect&);
198    virtual bool paintMediaMuteButton(RenderObject*, const PaintInfo&, const IntRect&);
199    virtual bool paintMediaSeekBackButton(RenderObject*, const PaintInfo&, const IntRect&);
200    virtual bool paintMediaSeekForwardButton(RenderObject*, const PaintInfo&, const IntRect&);
201    virtual bool paintMediaSliderTrack(RenderObject*, const PaintInfo&, const IntRect&);
202    virtual bool paintMediaSliderThumb(RenderObject*, const PaintInfo&, const IntRect&);
203    virtual bool paintMediaVolumeSliderContainer(RenderObject*, const PaintInfo&, const IntRect&);
204    virtual bool paintMediaVolumeSliderTrack(RenderObject*, const PaintInfo&, const IntRect&);
205    virtual bool paintMediaVolumeSliderThumb(RenderObject*, const PaintInfo&, const IntRect&);
206    virtual bool paintMediaCurrentTime(RenderObject*, const PaintInfo&, const IntRect&);
207#endif
208#if ENABLE(VIDEO_TRACK)
209    virtual bool supportsClosedCaptioning() const OVERRIDE;
210    virtual bool paintMediaToggleClosedCaptionsButton(RenderObject*, const PaintInfo&, const IntRect&) OVERRIDE;
211#endif
212    virtual bool shouldShowPlaceholderWhenFocused() const OVERRIDE { return true; }
213
214    void setThemePath(const String&);
215    String themePath() const;
216
217protected:
218    static float defaultFontSize;
219
220private:
221    bool loadTheme();
222    ALWAYS_INLINE bool loadThemeIfNeeded() const
223    {
224        return m_edje || (!m_themePath.isEmpty() && const_cast<RenderThemeEfl*>(this)->loadTheme());
225    }
226
227    ALWAYS_INLINE Ecore_Evas* canvas() const { return m_canvas.get(); }
228    ALWAYS_INLINE Evas_Object* edje() const { return m_edje.get(); }
229
230    void applyPartDescriptionsFrom(const String& themePath);
231
232    void applyEdjeStateFromForm(Evas_Object*, ControlStates);
233    void applyEdjeRTLState(Evas_Object*, RenderObject*, FormType, const IntRect&);
234    bool paintThemePart(RenderObject*, FormType, const PaintInfo&, const IntRect&);
235
236#if ENABLE(VIDEO)
237    bool emitMediaButtonSignal(FormType, MediaControlElementType, const IntRect&);
238#endif
239
240    Page* m_page;
241    Color m_activeSelectionBackgroundColor;
242    Color m_activeSelectionForegroundColor;
243    Color m_inactiveSelectionBackgroundColor;
244    Color m_inactiveSelectionForegroundColor;
245    Color m_focusRingColor;
246    Color m_sliderThumbColor;
247
248#if ENABLE(VIDEO)
249    Color m_mediaPanelColor;
250    Color m_mediaSliderColor;
251#endif
252
253    String m_themePath;
254    // Order so that the canvas gets destroyed at last.
255    OwnPtr<Ecore_Evas> m_canvas;
256    RefPtr<Evas_Object> m_edje;
257
258    bool m_supportsSelectionForegroundColor;
259
260    struct ThemePartDesc {
261        FormType type;
262        LengthSize min;
263        LengthSize max;
264        LengthBox padding;
265    };
266    void applyPartDescriptionFallback(struct ThemePartDesc*);
267    void applyPartDescription(Evas_Object*, struct ThemePartDesc*);
268
269    struct ThemePartCacheEntry {
270        static PassOwnPtr<RenderThemeEfl::ThemePartCacheEntry> create(const String& themePath, FormType, const IntSize&);
271        void reuse(const String& themePath, FormType, const IntSize&);
272
273        ALWAYS_INLINE Ecore_Evas* canvas() { return m_canvas.get(); }
274        ALWAYS_INLINE Evas_Object* edje() { return m_edje.get(); }
275        ALWAYS_INLINE cairo_surface_t* surface() { return m_surface.get(); }
276
277        FormType type;
278        IntSize size;
279
280    private:
281        // Order so that the canvas gets destroyed at last.
282        OwnPtr<Ecore_Evas> m_canvas;
283        RefPtr<Evas_Object> m_edje;
284        RefPtr<cairo_surface_t> m_surface;
285    };
286
287    struct ThemePartDesc m_partDescs[FormTypeLast];
288
289    // List of ThemePartCacheEntry* sorted so that the most recently
290    // used entries come first. We use a list for efficient moving
291    // of items within the container.
292    Eina_List* m_partCache;
293
294    ThemePartCacheEntry* getThemePartFromCache(FormType, const IntSize&);
295    void clearThemePartCache();
296};
297}
298
299#endif // RenderThemeEfl_h
300