source: GTP/trunk/App/Demos/Geom/OgreStuff/include/CEGUI/CEGUIImage.h @ 1812

Revision 1812, 16.9 KB checked in by gumbau, 18 years ago (diff)
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[1812]1/************************************************************************
2        filename:       CEGUIImage.h
3        created:        13/3/2004
4        author:         Paul D Turner
5       
6        purpose:        Defines interface for Image class
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 _CEGUIImage_h_
27#define _CEGUIImage_h_
28
29#include "CEGUIBase.h"
30#include "CEGUIString.h"
31#include "CEGUIRect.h"
32#include "CEGUIColourRect.h"
33#include "CEGUIVector.h"
34#include "CEGUISize.h"
35#include "CEGUIRenderer.h"
36#include <map>
37
38
39#if defined(_MSC_VER)
40#       pragma warning(push)
41#       pragma warning(disable : 4251)
42#endif
43
44
45// Start of CEGUI namespace section
46namespace CEGUI
47{
48/*!
49\brief
50        Class that represents a single Image of an Imageset.
51*/
52class CEGUIEXPORT Image
53{
54public:
55        /*!
56        \brief
57                Return a Size object containing the dimensions of the Image.
58
59        \return
60                Size object holding the width and height of the Image.
61        */
62        Size    getSize(void) const                     {return Size(d_scaledWidth, d_scaledHeight);}
63       
64
65        /*!
66        \brief
67                Return the pixel width of the image.
68
69        \return
70                Width of this Image in pixels.
71        */
72        float   getWidth(void) const            {return d_scaledWidth;}
73
74
75        /*!
76        \brief
77                Return the pixel height of the image.
78
79        \return
80                Height of this Image in pixels
81        */
82        float   getHeight(void) const           {return d_scaledHeight;}
83
84
85        /*!
86        \brief
87                Return a Point object that contains the offset applied when rendering this Image
88
89        \return
90                Point object containing the offsets applied when rendering this Image
91        */
92        Point   getOffsets(void) const          {return d_scaledOffset;}
93
94
95        /*!
96        \brief
97                Return the X rendering offset
98
99        \return
100                X rendering offset.  This is the number of pixels that the image is offset by when rendering at any given location.
101        */
102        float   getOffsetX(void) const          {return d_scaledOffset.d_x;}
103
104
105        /*!
106        \brief
107                Return the Y rendering offset
108
109        \return
110                Y rendering offset.  This is the number of pixels that the image is offset by when rendering at any given location.
111        */
112        float   getOffsetY(void) const          {return d_scaledOffset.d_y;}
113
114
115        /*!
116        \brief
117                Return the name of this Image object.
118
119        \return
120                String object containing the name of this Image
121        */
122        const String&   getName(void) const;
123
124
125        /*!
126        \brief
127                Return the name of the Imageset that contains this Image
128
129        \return
130                String object containing the name of the Imageset which this Image is a part of.
131        */
132        const String&   getImagesetName(void) const;
133
134    /*!
135    \brief
136        Return Rect describing the source texture area used by this Image.
137
138    \return
139        Rect object that describes, in pixels, the area upon the source texture
140        which is used when rendering this Image.
141    */
142    const Rect& getSourceTextureArea(void) const;
143
144        /*!
145        \brief
146                Queue the image to be drawn.
147               
148        \note
149                The final position of the Image will be adjusted by the offset values defined for this Image object.  If absolute positioning is
150                essential then these values should be taken into account prior to calling the draw() methods.  However, by doing this you take
151                away the ability of the Imageset designer to adjust the alignment and positioning of Images, therefore your component is far
152                less useful since it requires code changes to modify image positioning that could have been handled from a data file.
153
154        \param position
155                Vector3 object containing the location where the Image is to be drawn
156
157        \param size
158                Size object describing the size that the Image is to be drawn at.
159
160        \param clip_rect
161                Rect object that defines an on-screen area that the Image will be clipped to when drawing.
162
163        \param top_left_colour
164                Colour (as 0xAARRGGBB value) to be applied to the top-left corner of the Image.
165
166        \param top_right_colour
167                Colour (as 0xAARRGGBB value) to be applied to the top-right corner of the Image.
168
169        \param bottom_left_colour
170                Colour (as 0xAARRGGBB value) to be applied to the bottom-left corner of the Image.
171
172        \param bottom_right_colour
173                Colour (as 0xAARRGGBB value) to be applied to the bottom-right corner of the Image.
174       
175        \param quad_split_mode
176                One of the QuadSplitMode values specifying the way quads are split into triangles
177
178        \return
179                Nothing
180        */
181        void    draw(const Vector3& position, const Size& size, const Rect& clip_rect, const colour& top_left_colour = 0xFFFFFFFF, const colour& top_right_colour = 0xFFFFFFFF, const colour& bottom_left_colour = 0xFFFFFFFF, const colour& bottom_right_colour = 0xFFFFFFFF, QuadSplitMode quad_split_mode = TopLeftToBottomRight) const
182        {
183                draw(Rect(position.d_x, position.d_y, position.d_x + size.d_width, position.d_y + size.d_height), position.d_z, clip_rect,
184                        ColourRect(top_left_colour, top_right_colour, bottom_left_colour, bottom_right_colour), quad_split_mode);
185        }
186
187
188        /*!
189        \brief
190                Queue the image to be drawn.
191
192        \note
193                The final position of the Image will be adjusted by the offset values defined for this Image object.  If absolute positioning is
194                essential then these values should be taken into account prior to calling the draw() methods.  However, by doing this you take
195                away the ability of the Imageset designer to adjust the alignment and positioning of Images, therefore your component is far
196                less useful since it requires code changes to modify image positioning that could have been handled from a data file.
197
198        \param dest_rect
199                Rect object defining the area on-screen where the Image is to be drawn.  The Image will be scaled to fit the area as required.
200
201        \param z
202                Z-order position for the image.  Positions increase "into the screen", so 0.0f is at the top of the z-order.
203
204        \param clip_rect
205                Rect object that defines an on-screen area that the Image will be clipped to when drawing.
206
207        \param top_left_colour
208                Colour (as 0xAARRGGBB value) to be applied to the top-left corner of the Image.
209
210        \param top_right_colour
211                Colour (as 0xAARRGGBB value) to be applied to the top-right corner of the Image.
212
213        \param bottom_left_colour
214                Colour (as 0xAARRGGBB value) to be applied to the bottom-left corner of the Image.
215
216        \param bottom_right_colour
217                Colour (as 0xAARRGGBB value) to be applied to the bottom-right corner of the Image.
218       
219        \param quad_split_mode
220                One of the QuadSplitMode values specifying the way quads are split into triangles
221
222        \return
223                Nothing
224        */
225        void    draw(const Rect& dest_rect, float z, const Rect& clip_rect, const colour& top_left_colour = 0xFFFFFFFF, const colour& top_right_colour = 0xFFFFFFFF, const colour& bottom_left_colour = 0xFFFFFFFF, const colour& bottom_right_colour = 0xFFFFFFFF, QuadSplitMode quad_split_mode = TopLeftToBottomRight) const
226        {
227                draw(dest_rect, z, clip_rect, ColourRect(top_left_colour, top_right_colour, bottom_left_colour, bottom_right_colour), quad_split_mode);
228        }
229
230
231        /*!
232        \brief
233                Queue the image to be drawn.
234               
235        \note
236                The final position of the Image will be adjusted by the offset values defined for this Image object.  If absolute positioning is
237                essential then these values should be taken into account prior to calling the draw() methods.  However, by doing this you take
238                away the ability of the Imageset designer to adjust the alignment and positioning of Images, therefore your component is far
239                less useful since it requires code changes to modify image positioning that could have been handled from a data file.
240
241        \param position
242                Vector3 object containing the location where the Image is to be drawn
243
244        \param size
245                Size object describing the size that the Image is to be drawn at.
246
247        \param clip_rect
248                Rect object that defines an on-screen area that the Image will be clipped to when drawing.
249
250        \param colours
251                ColourRect object that describes the colour values to use for each corner of the Image.
252       
253        \param quad_split_mode
254                One of the QuadSplitMode values specifying the way quads are split into triangles
255
256        \return
257                Nothing
258        */
259        void    draw(const Vector3& position, const Size& size, const Rect& clip_rect, const ColourRect& colours, QuadSplitMode quad_split_mode = TopLeftToBottomRight) const
260        {
261                draw(Rect(position.d_x, position.d_y, position.d_x + size.d_width, position.d_y + size.d_height), position.d_z, clip_rect, colours, quad_split_mode);
262        }
263
264
265        /*!
266        \brief
267                Queue the image to be drawn.
268
269        \note
270                The final position of the Image will be adjusted by the offset values defined for this Image object.  If absolute positioning is
271                essential then these values should be taken into account prior to calling the draw() methods.  However, by doing this you take
272                away the ability of the Imageset designer to adjust the alignment and positioning of Images, therefore your component is far
273                less useful since it requires code changes to modify image positioning that could have been handled from a data file.
274
275        \param position
276                Vector3 object containing the location where the Image is to be drawn
277
278        \note
279                The image will be drawn at it's internally defined size.
280
281        \param clip_rect
282                Rect object that defines an on-screen area that the Image will be clipped to when drawing.
283
284        \param colours
285                ColourRect object that describes the colour values to use for each corner of the Image.
286       
287        \param quad_split_mode
288                One of the QuadSplitMode values specifying the way quads are split into triangles
289
290        \return
291                Nothing
292        */
293        void    draw(const Vector3& position, const Rect& clip_rect, const ColourRect& colours, QuadSplitMode quad_split_mode = TopLeftToBottomRight) const
294        {
295                draw(Rect(position.d_x, position.d_y, position.d_x + getWidth(), position.d_y + getHeight()), position.d_z, clip_rect, colours, quad_split_mode);
296        }
297
298
299        /*!
300        \brief
301                Queue the image to be drawn.
302
303        \note
304                The final position of the Image will be adjusted by the offset values defined for this Image object.  If absolute positioning is
305                essential then these values should be taken into account prior to calling the draw() methods.  However, by doing this you take
306                away the ability of the Imageset designer to adjust the alignment and positioning of Images, therefore your component is far
307                less useful since it requires code changes to modify image positioning that could have been handled from a data file.
308
309        \param position
310                Vector3 object containing the location where the Image is to be drawn
311
312        \param clip_rect
313                Rect object that defines an on-screen area that the Image will be clipped to when drawing.
314
315        \param top_left_colour
316                Colour (as 0xAARRGGBB value) to be applied to the top-left corner of the Image.
317
318        \param top_right_colour
319                Colour (as 0xAARRGGBB value) to be applied to the top-right corner of the Image.
320
321        \param bottom_left_colour
322                Colour (as 0xAARRGGBB value) to be applied to the bottom-left corner of the Image.
323
324        \param bottom_right_colour
325                Colour (as 0xAARRGGBB value) to be applied to the bottom-right corner of the Image.
326       
327        \param quad_split_mode
328                One of the QuadSplitMode values specifying the way quads are split into triangles
329
330        \return
331                Nothing
332        */
333        void    draw(const Vector3& position, const Rect& clip_rect, const colour& top_left_colour = 0xFFFFFFFF, const colour& top_right_colour = 0xFFFFFFFF, const colour& bottom_left_colour = 0xFFFFFFFF, const colour& bottom_right_colour = 0xFFFFFFFF, QuadSplitMode quad_split_mode = TopLeftToBottomRight) const
334        {
335                draw(Rect(position.d_x, position.d_y, position.d_x + getWidth(), position.d_y + getHeight()), position.d_z, clip_rect, ColourRect(top_left_colour, top_right_colour, bottom_left_colour, bottom_right_colour), quad_split_mode);
336        }
337
338
339        /*!
340        \brief
341                Queue the image to be drawn.
342
343        \note
344                The final position of the Image will be adjusted by the offset values defined for this Image object.  If absolute positioning is
345                essential then these values should be taken into account prior to calling the draw() methods.  However, by doing this you take
346                away the ability of the Imageset designer to adjust the alignment and positioning of Images, therefore your component is far
347                less useful since it requires code changes to modify image positioning that could have been handled from a data file.
348
349        \param dest_rect
350                Rect object defining the area on-screen where the Image is to be drawn.  The Image will be scaled to fit the area as required.
351
352        \param z
353                Z-order position for the image.  Positions increase "into the screen", so 0.0f is at the top of the z-order.
354
355        \param clip_rect
356                Rect object that defines an on-screen area that the Image will be clipped to when drawing.
357
358        \param colours
359                ColourRect object that describes the colour values to use for each corner of the Image.
360       
361        \param quad_split_mode
362                One of the QuadSplitMode values specifying the way quads are split into triangles
363
364        \return
365                Nothing
366        */
367        void    draw(const Rect& dest_rect, float z, const Rect& clip_rect,const ColourRect& colours, QuadSplitMode quad_split_mode = TopLeftToBottomRight) const;
368
369
370    /*!
371    \brief
372        Writes an xml representation of this Image object to \a out_stream.
373
374    \param out_stream
375        Stream where xml data should be output.
376
377    \return
378        Nothing.
379    */
380    void writeXMLToStream(OutStream& out_stream) const;
381
382
383        friend class std::map<String, Image>;
384        friend struct std::pair<const String, Image>;
385
386
387        /*************************************************************************
388                Construction and Destruction
389        *************************************************************************/
390        /*!
391        \brief
392                Default constructor (only used by std::map)
393        */
394        Image(void) {}
395
396
397        /*!
398        \brief
399                Constructor for Image objects.  This is not normally used directly by client code, use the Imageset interface instead.
400
401        \param owner
402                Pointer to a Imageset object that owns this Image.  This must not be NULL.
403               
404        \param name
405                String object describing the name of the image being created.
406               
407        \param area
408                Rect object describing an area that will be associated with this image.
409               
410        \param render_offset
411                Point object that describes the offset to be applied when rendering this image.
412               
413        \param horzScaling
414                float value indicating the initial horizontal scaling to be applied to this image.
415
416        \param vertScaling
417                float value indicating the initial vertical scaling to be applied to this image.
418
419        \exception NullObjectException  Thrown if \a owner was NULL.
420        */
421        Image(const Imageset* owner, const String& name, const Rect& area, const Point& render_offset, float horzScaling = 1.0f, float vertScaling = 1.0f);
422
423
424
425        /*!
426        \brief
427                Copy constructor
428        */
429        Image(const Image& image);
430
431
432        /*!
433        \brief
434                Destructor for Image objects.
435        */
436        ~Image(void);
437
438
439private:
440        /*************************************************************************
441                Friends
442        *************************************************************************/
443        friend class Imageset;
444
445               
446        /*************************************************************************
447                Implementation Methods
448        *************************************************************************/
449        /*!
450        \brief
451                set the horizontal scaling factor to be applied to this Image
452
453        \param factor
454                float value describing the scaling factor required.
455
456        \return
457                Nothing.
458        */
459        void    setHorzScaling(float factor);
460
461
462        /*!
463        \brief
464                set the vertical scaling factor to be applied to this Image
465
466        \param factor
467                float value describing the scaling factor required.
468
469        \return
470                Nothing.
471        */
472        void    setVertScaling(float factor);
473
474
475        /*************************************************************************
476                Implementation Data
477        *************************************************************************/
478        const Imageset* d_owner;                //!< Link back to Imageset that owns this image
479        Rect                    d_area;                 //!< Rect defining the area on the texture that makes up this image.
480        Point                   d_offset;               //!< Offset to use when rendering
481
482        // image auto-scaling fields.
483        float   d_scaledWidth;          //!< scaled image width.
484        float   d_scaledHeight;         //!< scaled image height.
485        Point   d_scaledOffset;         //!< scaled rendering offset.
486        String  d_name;                         //!< name of this image.
487};
488
489} // End of  CEGUI namespace section
490
491#if defined(_MSC_VER)
492#       pragma warning(pop)
493#endif
494
495#endif  // end of guard _CEGUIImage_h_
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