533 lines
16 KiB
C
533 lines
16 KiB
C
#include <glib.h>
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#include "render.h"
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#include "gradient.h"
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#include "../kernel/openbox.h"
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#include "color.h"
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void gradient_render(Surface *sf, int w, int h)
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{
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pixel32 *data = sf->pixel_data;
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pixel32 current;
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unsigned int r,g,b;
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int off, x;
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switch (sf->grad) {
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case Background_Solid: /* already handled */
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return;
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case Background_Vertical:
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gradient_vertical(sf, w, h);
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break;
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case Background_Horizontal:
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gradient_horizontal(sf, w, h);
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break;
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case Background_Diagonal:
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gradient_diagonal(sf, w, h);
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break;
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case Background_CrossDiagonal:
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gradient_crossdiagonal(sf, w, h);
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break;
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case Background_Pyramid:
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gradient_pyramid(sf, w, h);
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break;
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case Background_PipeCross:
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gradient_pipecross(sf, w, h);
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break;
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case Background_Rectangle:
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gradient_rectangle(sf, w, h);
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break;
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default:
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g_message("unhandled gradient");
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return;
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}
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if (sf->relief == Flat && sf->border) {
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r = sf->border_color->r;
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g = sf->border_color->g;
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b = sf->border_color->b;
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current = (r << default_red_offset)
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+ (g << default_green_offset)
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+ (b << default_blue_offset);
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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 (sf->relief != Flat) {
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if (sf->bevel == 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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sf->relief==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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sf->relief==Raised);
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}
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if (sf->bevel == 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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sf->relief==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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sf->relief==Raised);
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}
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}
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}
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void gradient_vertical(Surface *sf, int w, int h)
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{
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pixel32 *data = sf->pixel_data;
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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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int x, y;
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dr = (float)(sf->secondary->r - sf->primary->r);
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dr/= (float)h;
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dg = (float)(sf->secondary->g - sf->primary->g);
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dg/= (float)h;
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db = (float)(sf->secondary->b - sf->primary->b);
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db/= (float)h;
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for (y = 0; y < h; ++y) {
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r = sf->primary->r + (int)(dr * y);
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g = sf->primary->g + (int)(dg * y);
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b = sf->primary->b + (int)(db * y);
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current = (r << default_red_offset)
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+ (g << default_green_offset)
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+ (b << default_blue_offset);
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for (x = 0; x < w; ++x, ++data)
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*data = current;
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}
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}
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void gradient_horizontal(Surface *sf, int w, int h)
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{
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pixel32 *data = sf->pixel_data;
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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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int x, y;
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dr = (float)(sf->secondary->r - sf->primary->r);
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dr/= (float)w;
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dg = (float)(sf->secondary->g - sf->primary->g);
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dg/= (float)w;
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db = (float)(sf->secondary->b - sf->primary->b);
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db/= (float)w;
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for (x = 0; x < w; ++x, ++data) {
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r = sf->primary->r + (int)(dr * x);
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g = sf->primary->g + (int)(dg * x);
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b = sf->primary->b + (int)(db * x);
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current = (r << default_red_offset)
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+ (g << default_green_offset)
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+ (b << default_blue_offset);
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for (y = 0; y < h; ++y)
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*(data + y*w) = current;
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}
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}
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void gradient_diagonal(Surface *sf, int w, int h)
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{
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pixel32 *data = sf->pixel_data;
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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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int x, y;
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for (y = 0; y < h; ++y) {
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drx = (float)(sf->secondary->r -
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sf->primary->r);
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dry = drx/(float)h;
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drx/= (float)w;
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dgx = (float)(sf->secondary->g -
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sf->primary->g);
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dgy = dgx/(float)h;
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dgx/= (float)w;
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dbx = (float)(sf->secondary->b -
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sf->primary->b);
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dby = dbx/(float)h;
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dbx/= (float)w;
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for (x = 0; x < w; ++x, ++data) {
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r = sf->primary->r +
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((int)(drx * x) + (int)(dry * y))/2;
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g = sf->primary->g +
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((int)(dgx * x) + (int)(dgy * y))/2;
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b = sf->primary->b +
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((int)(dbx * x) + (int)(dby * y))/2;
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current = (r << default_red_offset)
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+ (g << default_green_offset)
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+ (b << default_blue_offset);
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*data = current;
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}
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}
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}
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void gradient_crossdiagonal(Surface *sf, int w, int h)
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{
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pixel32 *data = sf->pixel_data;
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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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int x, y;
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for (y = 0; y < h; ++y) {
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drx = (float)(sf->secondary->r -
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sf->primary->r);
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dry = drx/(float)h;
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drx/= (float)w;
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dgx = (float)(sf->secondary->g -
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sf->primary->g);
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dgy = dgx/(float)h;
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dgx/= (float)w;
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dbx = (float)(sf->secondary->b -
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sf->primary->b);
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dby = dbx/(float)h;
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dbx/= (float)w;
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for (x = w; x > 0; --x, ++data) {
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r = sf->primary->r +
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((int)(drx * (x-1)) + (int)(dry * y))/2;
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g = sf->primary->g +
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((int)(dgx * (x-1)) + (int)(dgy * y))/2;
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b = sf->primary->b +
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((int)(dbx * (x-1)) + (int)(dby * y))/2;
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current = (r << default_red_offset)
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+ (g << default_green_offset)
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+ (b << default_blue_offset);
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*data = current;
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}
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}
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}
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void highlight(pixel32 *x, pixel32 *y, gboolean raised)
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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 >> default_red_offset) & 0xFF;
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r += r >> 1;
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g = (*up >> default_green_offset) & 0xFF;
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g += g >> 1;
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b = (*up >> default_blue_offset) & 0xFF;
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b += b >> 1;
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if (r > 0xFF) r = 0xFF;
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if (g > 0xFF) g = 0xFF;
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if (b > 0xFF) b = 0xFF;
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*up = (r << default_red_offset) + (g << default_green_offset)
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+ (b << default_blue_offset);
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r = (*down >> default_red_offset) & 0xFF;
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r = (r >> 1) + (r >> 2);
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g = (*down >> default_green_offset) & 0xFF;
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g = (g >> 1) + (g >> 2);
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b = (*down >> default_blue_offset) & 0xFF;
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b = (b >> 1) + (b >> 2);
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*down = (r << default_red_offset) + (g << default_green_offset)
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+ (b << default_blue_offset);
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}
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static void create_bevel_colors(Appearance *l)
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{
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int r, g, b;
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/* light color */
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r = l->surface.primary->r;
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r += r >> 1;
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g = l->surface.primary->g;
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g += g >> 1;
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b = l->surface.primary->b;
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b += b >> 1;
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if (r > 0xFF) r = 0xFF;
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if (g > 0xFF) g = 0xFF;
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if (b > 0xFF) b = 0xFF;
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g_assert(!l->surface.bevel_light);
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l->surface.bevel_light = color_new(r, g, b);
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color_allocate_gc(l->surface.bevel_light);
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/* dark color */
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r = l->surface.primary->r;
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r = (r >> 1) + (r >> 2);
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g = l->surface.primary->g;
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g = (g >> 1) + (g >> 2);
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b = l->surface.primary->b;
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b = (b >> 1) + (b >> 2);
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g_assert(!l->surface.bevel_dark);
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l->surface.bevel_dark = color_new(r, g, b);
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color_allocate_gc(l->surface.bevel_dark);
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}
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void gradient_solid(Appearance *l, int x, int y, int w, int h)
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{
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pixel32 pix;
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int i, a, b;
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Surface *sp = &l->surface;
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int left = x, top = y, right = x + w - 1, bottom = y + h - 1;
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if (sp->primary->gc == None)
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color_allocate_gc(sp->primary);
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pix = (sp->primary->r << default_red_offset)
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+ (sp->primary->g << default_green_offset)
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+ (sp->primary->b << default_blue_offset);
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for (a = 0; a < w; a++)
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for (b = 0; b < h; b++)
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sp->pixel_data[a + b * w] = pix;
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XFillRectangle(ob_display, l->pixmap, sp->primary->gc,
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x, y, w, h);
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if (sp->interlaced) {
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if (sp->secondary->gc == None)
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color_allocate_gc(sp->secondary);
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for (i = y; i < h; i += 2)
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XDrawLine(ob_display, l->pixmap, sp->secondary->gc,
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x, i, w, i);
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}
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switch (sp->relief) {
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case Raised:
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if (!sp->bevel_dark)
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create_bevel_colors(l);
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switch (sp->bevel) {
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case Bevel1:
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XDrawLine(ob_display, l->pixmap, sp->bevel_dark->gc,
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left, bottom, right, bottom);
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XDrawLine(ob_display, l->pixmap, sp->bevel_dark->gc,
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right, bottom, right, top);
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XDrawLine(ob_display, l->pixmap, sp->bevel_light->gc,
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left, top, right, top);
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XDrawLine(ob_display, l->pixmap, sp->bevel_light->gc,
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left, bottom, left, top);
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break;
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case Bevel2:
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XDrawLine(ob_display, l->pixmap,
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sp->bevel_dark->gc,
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left + 1, bottom - 2, right - 2, bottom - 2);
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XDrawLine(ob_display, l->pixmap,
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sp->bevel_dark->gc,
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right - 2, bottom - 2, right - 2, top + 1);
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XDrawLine(ob_display, l->pixmap,
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sp->bevel_light->gc,
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left + 1, top + 1, right - 2, top + 1);
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XDrawLine(ob_display, l->pixmap,
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sp->bevel_light->gc,
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left + 1, bottom - 2, left + 1, top + 1);
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break;
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default:
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g_assert_not_reached(); /* unhandled BevelType */
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}
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break;
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case Sunken:
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if (!sp->bevel_dark)
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create_bevel_colors(l);
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switch (sp->bevel) {
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case Bevel1:
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XDrawLine(ob_display, l->pixmap, sp->bevel_light->gc,
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left, bottom, right, bottom);
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XDrawLine(ob_display, l->pixmap, sp->bevel_light->gc,
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right, bottom, right, top);
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XDrawLine(ob_display, l->pixmap, sp->bevel_dark->gc,
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left, top, right, top);
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XDrawLine(ob_display, l->pixmap, sp->bevel_dark->gc,
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left, bottom, left, top);
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break;
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case Bevel2:
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XDrawLine(ob_display, l->pixmap, sp->bevel_light->gc,
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left + 1, bottom - 2, right - 2, bottom - 2);
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XDrawLine(ob_display, l->pixmap, sp->bevel_light->gc,
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right - 2, bottom - 2, right - 2, top + 1);
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XDrawLine(ob_display, l->pixmap, sp->bevel_dark->gc,
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left + 1, top + 1, right - 2, top + 1);
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XDrawLine(ob_display, l->pixmap, sp->bevel_dark->gc,
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left + 1, bottom - 2, left + 1, top + 1);
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break;
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default:
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g_assert_not_reached(); /* unhandled BevelType */
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}
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break;
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case Flat:
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if (sp->border) {
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if (sp->border_color->gc == None)
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color_allocate_gc(sp->border_color);
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XDrawRectangle(ob_display, l->pixmap, sp->border_color->gc,
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left, top, right, bottom);
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}
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break;
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default:
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g_assert_not_reached(); /* unhandled ReliefType */
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}
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}
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void gradient_pyramid(Surface *sf, int inw, int inh)
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{
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pixel32 *data = sf->pixel_data;
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pixel32 *end = data + inw*inh - 1;
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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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int x, y, h=(inh/2) + 1, w=(inw/2) + 1;
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drx = (float)(sf->secondary->r -
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sf->primary->r);
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dry = drx/(float)h;
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drx/= (float)w;
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dgx = (float)(sf->secondary->g -
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sf->primary->g);
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dgy = dgx/(float)h;
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dgx/= (float)w;
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dbx = (float)(sf->secondary->b -
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sf->primary->b);
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dby = dbx/(float)h;
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dbx/= (float)w;
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for (y = 0; y < h; ++y) {
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for (x = 0; x < w; ++x, data) {
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r = sf->primary->r +
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((int)(drx * x) + (int)(dry * y))/2;
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g = sf->primary->g +
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((int)(dgx * x) + (int)(dgy * y))/2;
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b = sf->primary->b +
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((int)(dbx * x) + (int)(dby * y))/2;
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current = (r << default_red_offset)
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+ (g << default_green_offset)
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+ (b << default_blue_offset);
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*(data+x) = current;
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*(data+inw-x) = current;
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*(end-x) = current;
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*(end-(inw-x)) = current;
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}
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data+=inw;
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end-=inw;
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}
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}
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void gradient_rectangle(Surface *sf, int inw, int inh)
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{
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pixel32 *data = sf->pixel_data;
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pixel32 *end = data + inw*inh - 1;
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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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int x, y, h=(inh/2) + 1, w=(inw/2) + 1;
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drx = (float)(sf->primary->r -
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sf->secondary->r);
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dry = drx/(float)h;
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drx/= (float)w;
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dgx = (float)(sf->primary->g -
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sf->secondary->g);
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dgy = dgx/(float)h;
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dgx/= (float)w;
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dbx = (float)(sf->primary->b -
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sf->secondary->b);
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dby = dbx/(float)h;
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dbx/= (float)w;
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for (y = 0; y < h; ++y) {
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for (x = 0; x < w; ++x, data) {
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if ((float)x/(float)w < (float)y/(float)h) {
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r = sf->primary->r + (drx * x);
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g = sf->primary->g + (dgx * x);
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b = sf->primary->b + (dbx * x);
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} else {
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r = sf->primary->r + (dry * x);
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g = sf->primary->g + (dgy * x);
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b = sf->primary->b + (dby * x);
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}
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current = (r << default_red_offset)
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+ (g << default_green_offset)
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+ (b << default_blue_offset);
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*(data+x) = current;
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*(data+inw-x) = current;
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*(end-x) = current;
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*(end-(inw-x)) = current;
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}
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data+=inw;
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end-=inw;
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}
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}
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void gradient_pipecross(Surface *sf, int inw, int inh)
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{
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pixel32 *data = sf->pixel_data;
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pixel32 *end = data + inw*inh - 1;
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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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int x, y, h=(inh/2) + 1, w=(inw/2) + 1;
|
|
|
|
drx = (float)(sf->secondary->r -
|
|
sf->primary->r);
|
|
dry = drx/(float)h;
|
|
drx/= (float)w;
|
|
|
|
dgx = (float)(sf->secondary->g -
|
|
sf->primary->g);
|
|
dgy = dgx/(float)h;
|
|
dgx/= (float)w;
|
|
|
|
dbx = (float)(sf->secondary->b -
|
|
sf->primary->b);
|
|
dby = dbx/(float)h;
|
|
dbx/= (float)w;
|
|
|
|
for (y = 0; y < h; ++y) {
|
|
for (x = 0; x < w; ++x, data) {
|
|
if ((float)x/(float)w > (float)y/(float)h) {
|
|
r = sf->primary->r + (drx * x);
|
|
g = sf->primary->g + (dgx * x);
|
|
b = sf->primary->b + (dbx * x);
|
|
} else {
|
|
r = sf->primary->r + (dry * x);
|
|
g = sf->primary->g + (dgy * x);
|
|
b = sf->primary->b + (dby * x);
|
|
}
|
|
current = (r << default_red_offset)
|
|
+ (g << default_green_offset)
|
|
+ (b << default_blue_offset);
|
|
*(data+x) = current;
|
|
*(data+inw-x) = current;
|
|
*(end-x) = current;
|
|
*(end-(inw-x)) = current;
|
|
}
|
|
data+=inw;
|
|
end-=inw;
|
|
}
|
|
}
|