347 lines
9.3 KiB
C++
347 lines
9.3 KiB
C++
// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
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#ifdef HAVE_CONFIG_H
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# include "../config.h"
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#endif // HAVE_CONFIG_H
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#include "truerendercontrol.hh"
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#include "display.hh"
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#include "screeninfo.hh"
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#include "surface.hh"
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#include "rendertexture.hh"
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extern "C" {
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#ifdef HAVE_STDLIB_H
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# include <stdlib.h>
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#endif // HAVE_STDLIB_H
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#include "../src/gettext.h"
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#define _(str) gettext(str)
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}
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namespace otk {
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TrueRenderControl::TrueRenderControl(int screen)
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: RenderControl(screen),
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_red_offset(0),
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_green_offset(0),
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_blue_offset(0)
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{
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printf("Initializing TrueColor RenderControl\n");
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Visual *visual = display->screenInfo(_screen)->visual();
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unsigned long red_mask, green_mask, blue_mask;
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// find the offsets for each color in the visual's masks
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red_mask = visual->red_mask;
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green_mask = visual->green_mask;
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blue_mask = visual->blue_mask;
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while (! (red_mask & 1)) { _red_offset++; red_mask >>= 1; }
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while (! (green_mask & 1)) { _green_offset++; green_mask >>= 1; }
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while (! (blue_mask & 1)) { _blue_offset++; blue_mask >>= 1; }
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_red_shift = _green_shift = _blue_shift = 8;
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while (red_mask) { red_mask >>= 1; _red_shift--; }
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while (green_mask) { green_mask >>= 1; _green_shift--; }
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while (blue_mask) { blue_mask >>= 1; _blue_shift--; }
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}
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TrueRenderControl::~TrueRenderControl()
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{
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printf("Destroying TrueColor RenderControl\n");
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}
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static inline void renderPixel(XImage *im, unsigned char *dp,
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unsigned long pixel)
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{
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unsigned int bpp = im->bits_per_pixel + (im->byte_order == MSBFirst ? 1 : 0);
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switch (bpp) {
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case 8: // 8bpp
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*dp++ = pixel;
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break;
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case 16: // 16bpp LSB
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*dp++ = pixel;
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*dp++ = pixel >> 8;
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break;
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case 17: // 16bpp MSB
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*dp++ = pixel >> 8;
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*dp++ = pixel;
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break;
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case 24: // 24bpp LSB
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*dp++ = pixel;
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*dp++ = pixel >> 8;
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*dp++ = pixel >> 16;
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break;
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case 25: // 24bpp MSB
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*dp++ = pixel >> 16;
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*dp++ = pixel >> 8;
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*dp++ = pixel;
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break;
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case 32: // 32bpp LSB
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*dp++ = pixel;
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*dp++ = pixel >> 8;
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*dp++ = pixel >> 16;
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*dp++ = pixel >> 24;
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break;
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case 33: // 32bpp MSB
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*dp++ = pixel >> 24;
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*dp++ = pixel >> 16;
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*dp++ = pixel >> 8;
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*dp++ = pixel;
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break;
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default:
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assert(false); // wtf?
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}
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}
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void TrueRenderControl::drawGradientBackground(
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Surface &sf, const RenderTexture &texture) const
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{
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unsigned int r,g,b;
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int w = sf.width(), h = sf.height(), off, x;
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const ScreenInfo *info = display->screenInfo(_screen);
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XImage *im = XCreateImage(**display, info->visual(), info->depth(),
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ZPixmap, 0, NULL, w, h, 32, 0);
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pixel32 *data = new pixel32[sf.height()*sf.width()];
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pixel32 current;
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switch (texture.gradient()) {
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case RenderTexture::Vertical:
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verticalGradient(sf, texture, data);
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break;
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case RenderTexture::Diagonal:
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diagonalGradient(sf, texture, data);
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break;
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case RenderTexture::CrossDiagonal:
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crossDiagonalGradient(sf, texture, data);
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break;
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default:
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printf("unhandled gradient\n");
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}
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if (texture.relief() == RenderTexture::Flat && texture.border()) {
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r = texture.borderColor().red();
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g = texture.borderColor().green();
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b = texture.borderColor().blue();
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current = (r << 16)
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+ (g << 8)
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+ b;
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for (off = 0, x = 0; x < w; ++x, off++) {
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*(data + off) = current;
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*(data + off + ((h-1) * w)) = current;
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}
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for (off = 0, x = 0; x < h; ++x, off++) {
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*(data + (off * w)) = current;
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*(data + (off * w) + w - 1) = current;
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}
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}
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if (texture.relief() != RenderTexture::Flat) {
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if (texture.bevel() == RenderTexture::Bevel1) {
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for (off = 1, x = 1; x < w - 1; ++x, off++)
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highlight(data + off,
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data + off + (h-1) * w,
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texture.relief()==RenderTexture::Raised);
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for (off = 0, x = 0; x < h; ++x, off++)
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highlight(data + off * w,
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data + off * w + w - 1,
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texture.relief()==RenderTexture::Raised);
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}
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if (texture.bevel() == RenderTexture::Bevel2) {
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for (off = 2, x = 2; x < w - 2; ++x, off++)
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highlight(data + off + w,
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data + off + (h-2) * w,
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texture.relief()==RenderTexture::Raised);
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for (off = 1, x = 1; x < h-1; ++x, off++)
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highlight(data + off * w + 1,
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data + off * w + w - 2,
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texture.relief()==RenderTexture::Raised);
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}
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}
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reduceDepth(im, data);
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im->data = (char*) data;
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sf.setPixmap(im);
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delete [] im->data;
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im->data = NULL;
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XDestroyImage(im);
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}
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void TrueRenderControl::verticalGradient(Surface &sf,
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const RenderTexture &texture,
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pixel32 *data) const
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{
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pixel32 current;
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float dr, dg, db;
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unsigned int r,g,b;
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dr = (float)(texture.secondary_color().red() - texture.color().red());
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dr/= (float)sf.height();
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dg = (float)(texture.secondary_color().green() - texture.color().green());
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dg/= (float)sf.height();
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db = (float)(texture.secondary_color().blue() - texture.color().blue());
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db/= (float)sf.height();
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for (int y = 0; y < sf.height(); ++y) {
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r = texture.color().red() + (int)(dr * y);
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g = texture.color().green() + (int)(dg * y);
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b = texture.color().blue() + (int)(db * y);
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current = (r << 16)
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+ (g << 8)
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+ b;
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for (int x = 0; x < sf.width(); ++x, ++data)
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*data = current;
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}
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}
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void TrueRenderControl::diagonalGradient(Surface &sf,
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const RenderTexture &texture,
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pixel32 *data) const
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{
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pixel32 current;
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float drx, dgx, dbx, dry, dgy, dby;
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unsigned int r,g,b;
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for (int y = 0; y < sf.height(); ++y) {
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drx = (float)(texture.secondary_color().red() - texture.color().red());
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dry = drx/(float)sf.height();
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drx/= (float)sf.width();
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dgx = (float)(texture.secondary_color().green() - texture.color().green());
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dgy = dgx/(float)sf.height();
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dgx/= (float)sf.width();
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dbx = (float)(texture.secondary_color().blue() - texture.color().blue());
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dby = dbx/(float)sf.height();
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dbx/= (float)sf.width();
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for (int x = 0; x < sf.width(); ++x, ++data) {
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r = texture.color().red() + ((int)(drx * x) + (int)(dry * y))/2;
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g = texture.color().green() + ((int)(dgx * x) + (int)(dgy * y))/2;
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b = texture.color().blue() + ((int)(dbx * x) + (int)(dby * y))/2;
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current = (r << 16)
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+ (g << 8)
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+ b;
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*data = current;
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}
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}
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}
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void TrueRenderControl::crossDiagonalGradient(Surface &sf,
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const RenderTexture &texture,
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pixel32 *data) const
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{
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pixel32 current;
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float drx, dgx, dbx, dry, dgy, dby;
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unsigned int r,g,b;
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for (int y = 0; y < sf.height(); ++y) {
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drx = (float)(texture.secondary_color().red() - texture.color().red());
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dry = drx/(float)sf.height();
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drx/= (float)sf.width();
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dgx = (float)(texture.secondary_color().green() - texture.color().green());
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dgy = dgx/(float)sf.height();
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dgx/= (float)sf.width();
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dbx = (float)(texture.secondary_color().blue() - texture.color().blue());
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dby = dbx/(float)sf.height();
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dbx/= (float)sf.width();
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for (int x = sf.width(); x > 0; --x, ++data) {
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r = texture.color().red() + ((int)(drx * (x-1)) + (int)(dry * y))/2;
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g = texture.color().green() + ((int)(dgx * (x-1)) + (int)(dgy * y))/2;
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b = texture.color().blue() + ((int)(dbx * (x-1)) + (int)(dby * y))/2;
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current = (r << 16)
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+ (g << 8)
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+ b;
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*data = current;
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}
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}
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}
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void TrueRenderControl::reduceDepth(XImage *im, pixel32 *data) const
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{
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// since pixel32 is the largest possible pixel size, we can share the array
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int r, g, b;
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int x,y;
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pixel16 *p = (pixel16 *)data;
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switch (im->bits_per_pixel) {
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case 32:
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return;
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case 16:
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for (y = 0; y < im->height; y++) {
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for (x = 0; x < im->width; x++) {
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r = (data[x] >> 16) & 0xFF;
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r = r >> _red_shift;
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g = (data[x] >> 8) & 0xFF;
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g = g >> _green_shift;
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b = data[x] & 0xFF;
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b = b >> _blue_shift;
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p[x] = (r << _red_offset) + (g << _green_offset) + (b << _blue_offset);
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}
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data += im->width;
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p += im->bytes_per_line/2;
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}
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break;
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default:
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printf("your bit depth is currently unhandled\n");
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}
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}
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void TrueRenderControl::highlight(pixel32 *x, pixel32 *y, bool raised) const
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{
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int r, g, b;
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pixel32 *up, *down;
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if (raised) {
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up = x;
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down = y;
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} else {
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up = y;
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down = x;
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}
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r = (*up >> 16) & 0xFF;
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r += r >> 1;
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g = (*up >> 8) & 0xFF;
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g += g >> 1;
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b = *up & 0xFF;
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b += b >> 1;
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if (r > 255) r = 255;
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if (g > 255) g = 255;
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if (b > 255) b = 255;
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*up = (r << 16) + (g << 8) + b;
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r = (*down >> 16) & 0xFF;
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r = (r >> 1) + (r >> 2);
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g = (*down >> 8) & 0xFF;
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g = (g >> 1) + (g >> 2);
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b = *down & 0xFF;
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b = (b >> 1) + (b >> 2);
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*down = (r << 16) + (g << 8) + b;
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}
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void TrueRenderControl::drawBackground(Surface& sf,
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const RenderTexture &texture) const
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{
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assert(_screen == sf._screen);
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assert(_screen == texture.color().screen());
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if (texture.gradient() == RenderTexture::Solid) {
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drawSolidBackground(sf, texture);
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} else {
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drawGradientBackground(sf, texture);
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}
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}
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}
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