source: GTP/trunk/App/Demos/Geom/include/CEGUI/elements/CEGUIStaticText.h @ 1030

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1/************************************************************************
2        filename:       CEGUIStaticText.h
3        created:        4/6/2004
4        author:         Paul D Turner
5       
6        purpose:        Defines interface for a static text widget
7*************************************************************************/
8/*************************************************************************
9    Crazy Eddie's GUI System (http://www.cegui.org.uk)
10    Copyright (C)2004 - 2005 Paul D Turner (paul@cegui.org.uk)
11
12    This library is free software; you can redistribute it and/or
13    modify it under the terms of the GNU Lesser General Public
14    License as published by the Free Software Foundation; either
15    version 2.1 of the License, or (at your option) any later version.
16
17    This library is distributed in the hope that it will be useful,
18    but WITHOUT ANY WARRANTY; without even the implied warranty of
19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
20    Lesser General Public License for more details.
21
22    You should have received a copy of the GNU Lesser General Public
23    License along with this library; if not, write to the Free Software
24    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
25*************************************************************************/
26#ifndef _CEGUIStaticText_h_
27#define _CEGUIStaticText_h_
28
29#include "elements/CEGUIStatic.h"
30#include "elements/CEGUIStaticTextProperties.h"
31
32
33#if defined(_MSC_VER)
34#       pragma warning(push)
35#       pragma warning(disable : 4251)
36#endif
37
38
39// Start of CEGUI namespace section
40namespace CEGUI
41{
42/*!
43\brief
44        Base class for a static text widget.
45*/
46class CEGUIEXPORT StaticText : public Static
47{
48public:
49        static const String EventNamespace;                             //!< Namespace for global events
50
51
52        /*************************************************************************
53                Formatting Enumerations
54        *************************************************************************/
55        /*!
56        \brief
57                Enumeration of horizontal formatting options for static text widgets
58        */
59        enum HorzFormatting
60        {
61                LeftAligned,                    //!< Text is output as a single line of text with the first character aligned with the left edge of the widget.
62                RightAligned,                   //!< Text is output as a single line of text with the last character aligned with the right edge of the widget.
63                HorzCentred,                    //!< Text is output as a single line of text horizontally centred within the widget.
64                HorzJustified,                  //!< Text is output as a single line of text with the first and last characters aligned with the edges of the widget.
65                WordWrapLeftAligned,    //!< Text is output as multiple word-wrapped lines of text with the first character of each line aligned with the left edge of the widget.
66                WordWrapRightAligned,   //!< Text is output as multiple word-wrapped lines of text with the last character of each line aligned with the right edge of the widget.
67                WordWrapCentred,                //!< Text is output as multiple word-wrapped lines of text with each line horizontally centered within the widget.
68                WordWrapJustified               //!< Text is output as multiple word-wrapped lines of text with the first and last characters of each line aligned with the edges of the widget.
69        };
70
71
72        /*!
73        \brief
74                Enumeration of vertical formatting options for a static text widgets
75        */
76        enum VertFormatting
77        {
78                TopAligned,             //!< Text is output with the top of first line of text aligned with the top edge of the widget.
79                BottomAligned,  //!< Text is output with the bottom of last line of text aligned with the bottom edge of the widget.
80                VertCentred     //!< Text is output vertically centred within the widget.
81        };
82
83
84        /*************************************************************************
85                Construction and Destruction
86        *************************************************************************/
87        /*!
88        \brief
89                Constructor for static text widgets.
90        */
91        StaticText(const String& type, const String& name);
92
93
94        /*!
95        \brief
96                Destructor for static text widgets.
97        */
98        virtual ~StaticText(void);
99
100
101        /*************************************************************************
102                Accessors
103        *************************************************************************/
104        /*!
105        \brief
106                Return a ColourRect object containing the colours used when rendering this widget.
107
108        \return
109                ColourRect object initialised with the colours used when rendering the text for this widget.
110        */
111        ColourRect      getTextColours(void) const              {return d_textCols;}
112
113       
114        /*!
115        \brief
116                Return the current horizontal formatting option set for this widget.
117
118        \return
119                One of the StaticText::HorzFormatting enumerated values specifying the horizontal formatting currently set.
120        */
121        HorzFormatting  getHorizontalFormatting(void) const             {return d_horzFormatting;}
122
123
124        /*!
125        \brief
126                Return the current vertical formatting option set for this widget.
127
128        \return
129                One of the StaticText::VertFormatting enumerated values specifying the vertical formatting currently set.
130        */
131        VertFormatting  getVerticalFormatting(void) const               {return d_vertFormatting;}
132
133
134        /*!
135        \brief
136                Return whether the vertical scroll bar is set to be shown if needed.
137
138        \return
139                - true if the vertical scroll bar will be shown if needed (top or bottom aligned formatting only).
140                - false if the vertical scroll bar will never be shown (default behaviour).
141        */
142        bool    isVerticalScrollbarEnabled(void) const;
143
144
145        /*!
146        \brief
147                Return whether the horizontal scroll bar is set to be shown if needed.
148
149        \return
150                - true if the horizontal scroll bar will be shown if needed (non-word wrapped, left or right aligned formatting only).
151                - false if the horizontal scroll bar will never be shown (default behaviour).
152        */
153        bool    isHorizontalScrollbarEnabled(void) const;
154
155
156        // overridden (again) so scroll bars are not clipped when they are active
157        virtual Rect    getUnclippedInnerRect(void) const;
158
159
160        /*************************************************************************
161                Manipulators
162        *************************************************************************/
163        /*!
164        \brief
165                Initialise the Window based object ready for use.
166
167        \note
168                This must be called for every window created.  Normally this is handled automatically by the WindowFactory for each Window type.
169
170        \return
171                Nothing
172        */
173        virtual void    initialise(void);
174
175
176        /*!
177        \brief
178                Sets the colours to be applied when rendering the text.
179
180        \param colours
181                ColourRect object describing the colours to be used for each text glyph rendered.
182
183        \return
184                Nothing.
185        */
186        void    setTextColours(const ColourRect& colours);
187
188
189        /*!
190        \brief
191                Sets the colours to be applied when rendering the text.
192
193        \param top_left_colour
194                Colour to be applied to the top-left corner of each text glyph rendered.
195
196        \param top_right_colour
197                Colour to be applied to the top-right corner of each text glyph rendered.
198
199        \param bottom_left_colour
200                Colour to be applied to the bottom-left corner of each text glyph rendered.
201
202        \param bottom_right_colour
203                Colour to be applied to the bottom-right corner of each text glyph rendered.
204
205        \return
206                Nothing.
207        */
208        void    setTextColours(const colour& top_left_colour, const colour& top_right_colour, const colour& bottom_left_colour, const colour& bottom_right_colour);
209
210
211        /*!
212        \brief
213                Sets the colour to be applied when rendering the text.
214
215        \param col
216                colour value to be used when rendering.
217
218        \return
219                Nothing.
220        */
221        void    setTextColours(const colour& col)               {setTextColours(col, col, col, col);}
222
223
224        /*!
225        \brief
226                Set the formatting required for the text.
227
228        \param h_fmt
229                One of the HorzFormatting enumerated values specifying the formatting required.
230
231        \param v_fmt
232                One of the VertFormatting enumerated values specifying the formatting required.
233
234        \return
235                Nothing
236        */
237        void    setFormatting(HorzFormatting h_fmt, VertFormatting v_fmt);
238
239
240        /*!
241        \brief
242                Set the formatting required for the text.
243
244        \param v_fmt
245                One of the VertFormatting enumerated values specifying the formatting required.
246
247        \return
248                Nothing
249        */
250        void    setVerticalFormatting(VertFormatting v_fmt);
251
252
253        /*!
254        \brief
255                Set the formatting required for the text.
256
257        \param h_fmt
258                One of the HorzFormatting enumerated values specifying the formatting required.
259
260        \return
261                Nothing
262        */
263        void    setHorizontalFormatting(HorzFormatting h_fmt);
264
265
266        /*!
267        \brief
268                Set whether the vertical scroll bar will be shown if needed.
269
270        \param setting
271                - true if the vertical scroll bar should be shown if needed (top or bottom aligned formatting only).
272                - false if the vertical scroll bar should never be shown (default behaviour).
273        */
274        void    setVerticalScrollbarEnabled(bool setting);
275
276
277        /*!
278        \brief
279                Set whether the horizontal scroll bar will be shown if needed.
280
281        \param setting
282                - true if the horizontal scroll bar should be shown if needed (non-word wrapped, left or right aligned formatting only).
283                - false if the horizontal scroll bar should never be shown (default behaviour).
284        */
285        void    setHorizontalScrollbarEnabled(bool setting);
286
287
288protected:
289        /*************************************************************************
290                Overridden from base class
291        *************************************************************************/
292        /*!
293        \brief
294                Perform the actual rendering for this Window.
295
296        \param z
297                float value specifying the base Z co-ordinate that should be used when rendering
298
299        \return
300                Nothing
301        */
302        virtual void    drawSelf(float z);
303
304
305        /*************************************************************************
306                Overridden events
307        *************************************************************************/
308        virtual void    onTextChanged(WindowEventArgs& e);
309        virtual void    onSized(WindowEventArgs& e);
310        virtual void    onFontChanged(WindowEventArgs& e);
311        virtual void    onMouseWheel(MouseEventArgs& e);
312
313
314        /*************************************************************************
315                Implementation methods
316        *************************************************************************/
317        /*!
318        \brief
319                Return a Rect object describing, in un-clipped pixels, the window relative area
320                that the text should be rendered in to.
321
322        \return
323                Rect object describing the area of the Window to be used for rendering text.
324        */
325        virtual Rect    getTextRenderArea(void) const;
326
327
328        /*!
329        \brief
330                Setup size and position for the component widgets attached to this StaticText
331
332        \return
333                Nothing.
334        */
335        virtual void    layoutComponentWidgets();
336
337
338        /*!
339        \brief
340                display required integrated scroll bars according to current state of the edit box and update their values.
341        */
342        void    configureScrollbars(void);
343
344
345        /*!
346        \brief
347                Return whether this window was inherited from the given class name at some point in the inheritance heirarchy.
348
349        \param class_name
350                The class name that is to be checked.
351
352        \return
353                true if this window was inherited from \a class_name. false if not.
354        */
355        virtual bool    testClassName_impl(const String& class_name) const
356        {
357                if (class_name==(const utf8*)"StaticText")      return true;
358                return Static::testClassName_impl(class_name);
359        }
360
361
362        /*************************************************************************
363                Implementation Methods (abstract)
364        *************************************************************************/
365        /*!
366        \brief
367                create and return a pointer to a Scrollbar widget for use as vertical scroll bar
368
369        \return
370                Pointer to a Scrollbar to be used for scrolling vertically.
371        */
372        virtual Scrollbar*      createVertScrollbar(void) const         = 0;
373 
374
375        /*!
376        \brief
377                create and return a pointer to a Scrollbar widget for use as horizontal scroll bar
378
379        \return
380                Pointer to a Scrollbar to be used for scrolling horizontally.
381        */
382        virtual Scrollbar*      createHorzScrollbar(void) const         = 0;
383
384
385        /*************************************************************************
386                Event subscribers
387        *************************************************************************/
388        bool    handleScrollbarChange(const EventArgs& e);
389
390
391        /*************************************************************************
392                Implementation Data
393        *************************************************************************/
394        HorzFormatting  d_horzFormatting;               //!< Horizontal formatting to be applied to the text.
395        VertFormatting  d_vertFormatting;               //!< Vertical formatting to be applied to the text.
396        ColourRect              d_textCols;                             //!< Colours used when rendering the text.
397        Scrollbar*              d_vertScrollbar;                //!< Widget used as vertical scrollbar;
398        Scrollbar*              d_horzScrollbar;                //!< Widget used as horizontal scrollbar;
399        bool                    d_enableVertScrollbar;  //!< true if vertical scroll bar is enabled.
400        bool                    d_enableHorzScrollbar;  //!< true if horizontal scroll bar is enabled.
401
402private:
403        /*************************************************************************
404                Static Properties for this class
405        *************************************************************************/
406        static StaticTextProperties::TextColours        d_textColoursProperty;
407        static StaticTextProperties::VertFormatting     d_vertFormattingProperty;
408        static StaticTextProperties::HorzFormatting     d_horzFormattingProperty;
409        static StaticTextProperties::VertScrollbar      d_vertScrollbarProperty;
410        static StaticTextProperties::HorzScrollbar      d_horzScrollbarProperty;
411
412
413        /*************************************************************************
414                Private methods
415        *************************************************************************/
416        void    addStaticTextProperties(void);
417};
418
419} // End of  CEGUI namespace section
420
421#if defined(_MSC_VER)
422#       pragma warning(pop)
423#endif
424
425#endif  // end of guard _CEGUIStaticText_h_
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