diff options
Diffstat (limited to 'source/blender/img/intern/IMG_PixmapRGBA32.cpp')
| -rw-r--r-- | source/blender/img/intern/IMG_PixmapRGBA32.cpp | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/source/blender/img/intern/IMG_PixmapRGBA32.cpp b/source/blender/img/intern/IMG_PixmapRGBA32.cpp new file mode 100644 index 00000000000..7ef716643b7 --- /dev/null +++ b/source/blender/img/intern/IMG_PixmapRGBA32.cpp @@ -0,0 +1,262 @@ +/** + * $Id$ + * ***** BEGIN GPL/BL DUAL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. The Blender + * Foundation also sells licenses for use in proprietary software under + * the Blender License. See http://www.blender.org/BL/ for information + * about this. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): none yet. + * + * ***** END GPL/BL DUAL LICENSE BLOCK ***** + */ + +#include "IMG_PixmapRGBA32.h" + + + +IMG_PixmapRGBA32::IMG_PixmapRGBA32(TUns32 width, TUns32 height) + : IMG_Pixmap(), m_mem(width * height) +{ + m_image = m_mem; + m_width = width; + m_height = height; + m_rowBytes = width * sizeof(TPixelRGBA32); + m_pixelSize = 8 * sizeof(TPixelRGBA32); + m_pixelType = kPixelTypeRGBA32; +} + + +IMG_PixmapRGBA32::IMG_PixmapRGBA32(void* image, TUns32 width, TUns32 height, TUns32 rowBytes) + : IMG_Pixmap(), m_mem(image, width * rowBytes) +{ + m_image = m_mem; + m_width = width; + m_height = height; + m_rowBytes = rowBytes; + m_pixelSize = 8 * sizeof(TPixelRGBA32); + m_pixelType = kPixelTypeRGBA32; +} + + +void IMG_PixmapRGBA32::fillRect(const IMG_Rect& r, const IMG_ColorRGB& c) +{ + IMG_Rect t_bnds (0, 0, m_width, m_height); // Bounds of this pixmap + IMG_Rect r_bnds (r); // Area to set + + // Determine visibility + TVisibility v = t_bnds.getVisibility(r_bnds); + if (v == kNotVisible) return; + if (v == kPartiallyVisible) { + // Clip the destination rectangle to the bounds of this pixmap + t_bnds.clip(r_bnds); + if (r_bnds.isEmpty()) { + return; + } + } + +#if 0 + // Set new pixels using shifting + // Prepare the pixel value to set + IMG_ColorRGBA ca (c); + TPixelRGBA32 pv = getPixelValue(c); + // Mask off the alpha bits + pv &= 0x00FFFFFF; //0xFFFFFF00; + + // Set the pixels in the destination rectangle + for (TInt32 y = r.m_t; y < r.m_b; y++) { + // Park pixel pointer at the start pixels + TPixelPtr desPtr = getPixelPtr(r_bnds.m_l, y); + for (TInt32 x = r.m_l; x < r.m_r; x++) { + // Set the new pixel value (retain current alpha) + *(desPtr++) = pv | ((*desPtr) & 0xFF000000); //0x000000FF); + } + } +#else + // Set new values using byte indexing + //IMG_ColorRGBA ca (c); + TPixelRGBA32 src = getPixelValue(c); + TPixelPtr desPtr; + TUns8* srcBytes = (TUns8*) &src; + + // Set the pixels in the destination rectangle + for (TInt32 y = r.m_t; y < r.m_b; y++) { + // Park pixel pointer at the start pixels + desPtr = getPixelPtr(r_bnds.m_l, y); + for (TInt32 x = r.m_l; x < r.m_r; x++) { + // Set the new pixel value (retain current alpha) + ((TUns8*)desPtr)[bi_r] = srcBytes[bi_r]; + ((TUns8*)desPtr)[bi_g] = srcBytes[bi_g]; + ((TUns8*)desPtr)[bi_b] = srcBytes[bi_b]; + desPtr++; + } + } +#endif +} + + +void IMG_PixmapRGBA32::fillRect(const IMG_Rect& r, const IMG_ColorRGBA& c) +{ + IMG_Rect t_bnds (0, 0, m_width, m_height); // Bounds of this pixmap + IMG_Rect r_bnds (r); // Area to set + + // Determine visibility + TVisibility v = t_bnds.getVisibility(r_bnds); + if (v == kNotVisible) return; + if (v == kPartiallyVisible) { + // Clip the destination rectangle to the bounds of this pixmap + t_bnds.clip(r_bnds); + if (r_bnds.isEmpty()) { + return; + } + } + + // Set the pixels in the destination rectangle + TPixelRGBA32 pixel = getPixelValue(c); + for (TInt32 y = r.m_t; y < r.m_b; y++) { + // Park pixel pointer at the start pixels + TPixelPtr desPtr = getPixelPtr(r_bnds.m_l, y); + for (TInt32 x = r.m_l; x < r.m_r; x++) { + *(desPtr++) = pixel; + } + } +} + + +void IMG_PixmapRGBA32::setPixmap(TUns32 x, TUns32 y, const IMG_PixmapRGBA32& pixmap, const IMG_Rect& bnds) +{ + IMG_Rect i_bnds (bnds); // Bounds of input pixmap + IMG_Rect t_bnds (0, 0, m_width, m_height); // Bounds of this pixmap + IMG_Rect p_bnds (bnds); // Bounds of the paste area + p_bnds.setCenter(x, y); + + // The next check could be removed if the caller is made responsible for handing us non-empty rectangles + if (i_bnds.isEmpty()) { + // Nothing to do + return; + } + + // Determine visibility of the paste area + TVisibility v = t_bnds.getVisibility(p_bnds); + if (v == kNotVisible) return; + if (v == kPartiallyVisible) { + // Clipping is needed + if (p_bnds.m_l < 0) { + i_bnds.m_l += p_bnds.m_l; + p_bnds.m_l = 0; + } + if (p_bnds.m_t < 0) { + i_bnds.m_t += p_bnds.m_t; + p_bnds.m_t = 0; + } + TInt32 d = p_bnds.getWidth(); + if (p_bnds.m_r > d) { + i_bnds.m_t -= d - p_bnds.m_r; + p_bnds.m_t = d; + } + d = p_bnds.getHeight(); + if (p_bnds.m_b > d) { + i_bnds.m_b -= d - p_bnds.m_b; + p_bnds.m_b = d; + } + } + + // Iterate through the rows + for (TInt32 r = 0; r < p_bnds.getHeight(); r++) { + // Park pixel pointers at the start pixels + TPixelPtr srcPtr = getPixelPtr(i_bnds.m_l, i_bnds.m_t + r); + TPixelPtr desPtr = getPixelPtr(p_bnds.m_l, p_bnds.m_t + r); + // Iterate through the columns + for (int c = 0; c < p_bnds.getWidth(); c++) { + *(desPtr++) = *(srcPtr++); + } + } +} + + +void IMG_PixmapRGBA32::blendPixmap(TUns32 x, TUns32 y, const IMG_PixmapRGBA32& pixmap, const IMG_Rect& bnds) +{ + IMG_Rect i_bnds (bnds); // Bounds of input pixmap + IMG_Rect t_bnds (0, 0, m_width, m_height); // Bounds of this pixmap + IMG_Rect p_bnds (bnds); // Bounds of the paste area + p_bnds.setCenter(x, y); + + // The next check could be removed if the caller is made responsible for handing us non-empty rectangles + if (i_bnds.isEmpty()) { + // Nothing to do + return; + } + + // Determine visibility of the paste area + TVisibility v = t_bnds.getVisibility(p_bnds); + if (v == kNotVisible) return; + if (v == kPartiallyVisible) { + // Clipping is needed + if (p_bnds.m_l < 0) { + i_bnds.m_l += -p_bnds.m_l; + p_bnds.m_l = 0; + } + if (p_bnds.m_t < 0) { + i_bnds.m_t += -p_bnds.m_t; + p_bnds.m_t = 0; + } + TInt32 d = t_bnds.getWidth(); + if (p_bnds.m_r > d) { + i_bnds.m_r -= p_bnds.m_r - d; + p_bnds.m_r = d; + } + d = t_bnds.getHeight(); + if (p_bnds.m_b > d) { + i_bnds.m_b -= p_bnds.m_b - d; + p_bnds.m_b = d; + } + } + + IMG_ColorRGBA srcColor; + IMG_ColorRGBA desColor; + + // Iterate through the rows + for (int r = 0; r < p_bnds.getHeight(); r++) { + // Park pixel pointers at the start pixels + TPixelPtr srcPtr = pixmap.getPixelPtr(i_bnds.m_l, i_bnds.m_t + r); + TPixelPtr desPtr = getPixelPtr(p_bnds.m_l, p_bnds.m_t + r); + // Iterate through the columns + for (int c = 0; c < p_bnds.getWidth(); c++) { + // Retrieve colors from source and destination pixmaps + getColor(*srcPtr, srcColor); + getColor(*desPtr, desColor); + // Blend the colors + desColor.blendColor(srcColor); + // Write color back to destination pixmap + *desPtr = getPixelValue(desColor); + srcPtr++; + desPtr++; + } + } +} + + +void IMG_PixmapRGBA32::blendPixmap(float u, float v, const IMG_PixmapRGBA32& pixmap) +{ + TUns32 x, y; + getPixelAddress(u, v, x, y); + blendPixmap(x, y, pixmap); +} |