diff options
Diffstat (limited to 'intern/img/intern/IMG_PixmapRGBA32.cpp')
-rw-r--r-- | intern/img/intern/IMG_PixmapRGBA32.cpp | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/intern/img/intern/IMG_PixmapRGBA32.cpp b/intern/img/intern/IMG_PixmapRGBA32.cpp new file mode 100644 index 00000000000..a7b70e03616 --- /dev/null +++ b/intern/img/intern/IMG_PixmapRGBA32.cpp @@ -0,0 +1,260 @@ +/** + * $Id$ + * ***** 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 ***** + */ + +/** + + * $Id$ + * Copyright (C) 2001 NaN Technologies B.V. + * Base class for pixmaps. + * @author Maarten Gribnau + * @date March 6, 2001 + */ + + +#include "../extern/IMG_PixmapRGBA32.h" + +IMG_PixmapRGBA32::IMG_PixmapRGBA32(GEN_TUns32 width, GEN_TUns32 height) + : IMG_Pixmap(), m_pixels(width * height) +{ + m_pixelsBase = m_pixels; + m_width = width; + m_height = height; + m_rowBytes = width * sizeof(TPixelRGBA32); + m_pixelSize = 32; + m_pixelType = kPixelTypeRGBA32; +} + + +IMG_PixmapRGBA32::IMG_PixmapRGBA32(void* image, GEN_TUns32 width, GEN_TUns32 height, GEN_TUns32 rowBytes) + : IMG_Pixmap(), m_pixels(image, width * rowBytes) +{ + m_pixelsBase = m_pixels; + m_width = width; + m_height = height; + m_rowBytes = rowBytes; + m_pixelSize = 32; + m_pixelType = kPixelTypeRGBA32; +} + + +void IMG_PixmapRGBA32::fillRect(const GEN_Rect& r, const IMG_ColorRGB& c) +{ + GEN_Rect t_bnds (0, 0, m_width, m_height); // Bounds of this pixmap + GEN_Rect r_bnds (r); // Area to set + + // Determine visibility + GEN_TVisibility v = t_bnds.getVisibility(r_bnds); + if (v == GEN_kNotVisible) return; + if (v == GEN_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 (GEN_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 (GEN_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; + GEN_TUns8* srcBytes = (GEN_TUns8*) &src; + + // Set the pixels in the destination rectangle + for (GEN_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 (GEN_TInt32 x = r.m_l; x < r.m_r; x++) { + // Set the new pixel value (retain current alpha) + ((GEN_TUns8*)desPtr)[bi_r] = srcBytes[bi_r]; + ((GEN_TUns8*)desPtr)[bi_g] = srcBytes[bi_g]; + ((GEN_TUns8*)desPtr)[bi_b] = srcBytes[bi_b]; + desPtr++; + } + } +#endif +} + + +void IMG_PixmapRGBA32::fillRect(const GEN_Rect& r, const IMG_ColorRGBA& c) +{ + GEN_Rect t_bnds (0, 0, m_width, m_height); // Bounds of this pixmap + GEN_Rect r_bnds (r); // Area to set + + // Determine visibility + GEN_TVisibility v = t_bnds.getVisibility(r_bnds); + if (v == GEN_kNotVisible) return; + if (v == GEN_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 (GEN_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 (GEN_TInt32 x = r.m_l; x < r.m_r; x++) { + *(desPtr++) = pixel; + } + } +} + + +void IMG_PixmapRGBA32::setPixmap(const IMG_PixmapRGBA32& src, const GEN_Rect& srcBnds, const GEN_Rect& destBnds) +{ + GEN_Rect i_bnds (srcBnds); // Bounds of input pixmap + GEN_Rect t_bnds (0, 0, m_width, m_height); // Bounds of this pixmap + GEN_Rect p_bnds (destBnds); // Bounds of the paste area + + // 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 + GEN_TVisibility v = t_bnds.getVisibility(p_bnds); + if (v == GEN_kNotVisible) return; + if (v == GEN_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; + } + GEN_TInt32 d = t_bnds.getWidth(); + if (p_bnds.m_r > d) { + i_bnds.m_r -= d - p_bnds.m_r; + p_bnds.m_r = d; + } + d = t_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 (GEN_TInt32 r = 0; r < p_bnds.getHeight(); r++) { + // Park pixel pointers at the start pixels + TPixelPtr srcPtr = src.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(const IMG_PixmapRGBA32& src, const GEN_Rect& srcBnds, const GEN_Rect& destBnds) +{ + GEN_Rect i_bnds (srcBnds); // Bounds of input pixmap + GEN_Rect t_bnds (0, 0, m_width, m_height); // Bounds of this pixmap + GEN_Rect p_bnds (destBnds); // Bounds of the paste area + + // 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 + GEN_TVisibility v = t_bnds.getVisibility(p_bnds); + if (v == GEN_kNotVisible) return; + if (v == GEN_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; + } + GEN_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 = src.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++; + } + } +} |