e945a9faa6
* NEW: Requesting a component interface automatically loads the component now. * NEW: The Image and Picture functions in the interpreter API were removed. [GB.DRAW] * NEW: A new function in the Draw interface to get the size of a picture. This function replaces the removed Picture interpreter API. [GB.IMAGE] * NEW: This is a new component that manages images in memory. It implements the Image class, can create images of many formats (RGB, RGBA, BGRA...) and convert image data between different formats. This component replaces the previous interpreter Image API. All components were ported to this new image management system by loading this component automatically. Beware that the Image constructor has changed! The transparent property has been removed, and there is an optional color argument that is used for initializing the image data. Moreover, many classes (Webcam, PdfDocument...) that have an Image property lost their Picture property. Now to get a Picture, you must use the Image property and then convert the Image to a Picture. [GB.QT] * BUG: As now the Image class overrides the one located in gb.image, it must be declared early, at least earlier than the Picture class. git-svn-id: svn://localhost/gambas/trunk@1803 867c0c6c-44f3-4631-809d-bfa615b0a4ec
123 lines
4 KiB
C
123 lines
4 KiB
C
/***************************************************************************
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gb.image.h
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(c) 2000-2007 Benoit Minisini <gambas@freesurf.fr>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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***************************************************************************/
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#ifndef __GB_IMAGE_H
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#define __GB_IMAGE_H
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#include "gambas.h"
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/* constants used by image data format */
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#define GB_IMAGE_BGRX 0 // 00000
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#define GB_IMAGE_XRGB 1 // 00001
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#define GB_IMAGE_RGBX 2 // 00010
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#define GB_IMAGE_XBGR 3 // 00011
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#define GB_IMAGE_BGR 4 // 00100
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#define GB_IMAGE_RGB 5 // 00101
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#define GB_IMAGE_BGRA 8 // 01000
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#define GB_IMAGE_ARGB 9 // 01001
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#define GB_IMAGE_RGBA 10 // 01010
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#define GB_IMAGE_ABGR 11 // 01011
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#define GB_IMAGE_BGRP 24 // 11000
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#define GB_IMAGE_PRGB 25 // 11001
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#define GB_IMAGE_RGBP 26 // 11010
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#define GB_IMAGE_PBGR 27 // 11011
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/* format test functions */
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#define GB_IMAGE_FMT_IS_24_BITS(_format) ((_format) & 4)
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#define GB_IMAGE_FMT_IS_32_BITS(_format) (((_format) & 4)) == 0)
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#define GB_IMAGE_FMT_IS_SWAPPED(_format) ((_format) & 1)
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#define GB_IMAGE_FMT_IS_TRANSPARENT(_format) ((_format) & 8)
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#define GB_IMAGE_FMT_IS_PREMULTIPLIED(_format) ((_format) & 16)
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#define GB_IMAGE_FMT_SET_PREMULTIPLIED(_format) ((_format) | 16)
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#define GB_IMAGE_FMT_CLEAR_PREMULTIPLIED(_format) ((_format) & ~16)
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/* Image owner information */
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struct GB_IMG;
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typedef
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struct {
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const char *name;
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void (*free)(struct GB_IMG *img, void *handle); // free owner or temporary handle
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void (*release)(struct GB_IMG *img, void *handle); // free owner or temporary handle
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//void (*lock)(void *handle); // lock, before accessing pixels
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//void (*unlock)(void *handle); // unlock, after accessing pixels
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}
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GB_IMG_OWNER;
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/* Gambas image */
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typedef
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struct GB_IMG {
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GB_BASE ob;
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unsigned char *data; // points at the image data
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int width; // image width in pixels
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int height; // image height in pixels
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int format; // image format (RGB, BGR, RGBA...)
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GB_IMG_OWNER *owner; // owner of the data, NULL means gb.image
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void *owner_handle; // handle for the owner
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GB_IMG_OWNER *temp; // owner of the temporary handle that does not own the data
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void *temp_handle; // temporary handle
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}
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GB_IMG;
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#ifndef __GB_IMAGE_DEFINED
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#define __GB_IMAGE_DEFINED
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typedef
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void *GB_IMAGE;
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#endif
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/* Pixel color: the color is not premultiplied, and the alpha component is inverted (0 = solid / 255 = transparent) */
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typedef
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unsigned int GB_COLOR;
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/* Gambas image component interface */
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#define IMAGE_INTERFACE_VERSION 1
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typedef
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struct {
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intptr_t version;
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GB_IMG *(*Create)(int width, int height, int format, unsigned char *data);
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void (*Delete)(GB_IMG *img);
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void (*Take)(GB_IMG *img, GB_IMG_OWNER *owner, void *owner_handle, int width, int height, unsigned char *data);
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int (*Check)(GB_IMG *img, GB_IMG_OWNER *temp);
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void (*Convert)(GB_IMG *img, int format);
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void (*Fill)(GB_IMG *img, GB_COLOR col);
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void (*MakeGray)(GB_IMG *img);
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void (*MakeTransparent)(GB_IMG *img, GB_COLOR color);
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}
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IMAGE_INTERFACE;
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#define GB_IMG_SIZE(_image) ((_image)->width * (_image)->height * sizeof(int))
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#define GB_IMG_HANDLE(_image) ((_image)->temp_handle)
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#endif
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