mirror of
https://github.com/ultimatepp/ultimatepp.git
synced 2026-05-15 22:02:49 -06:00
282 lines
6.2 KiB
C++
282 lines
6.2 KiB
C++
#include "Draw.h"
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namespace Upp {
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int Diff(RGBA a, RGBA b)
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{
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return max(abs(a.a - b.a), max(abs(a.r - b.r), max(abs(a.b - b.b), abs(a.g - b.g))));
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}
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struct ButtonDecomposer {
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Image src;
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Image dst;
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int aa;
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int maxdiff;
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RGBA color;
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int gdiff;
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int gcount;
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void Do() {
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Size sz = src.GetSize();
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int a = min(5, min(sz.cx, sz.cy) / 5);
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maxdiff = gdiff = gcount = 0;
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color = SColorDisabled();
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dst = src;
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ImageBuffer b(dst);
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for(int y = a; y < sz.cy - a; y++) {
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RGBA *p = b[y];
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RGBA c1 = p[a - 1];
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RGBA c2 = p[sz.cx - a + 1];
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int n = sz.cx - 2 * a;
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p += a;
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for(int x = 0; x < n; x++) {
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RGBA c;
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c.r = ((n - x) * c1.r + x * c2.r) / n;
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c.g = ((n - x) * c1.g + x * c2.g) / n;
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c.b = ((n - x) * c1.b + x * c2.b) / n;
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c.a = ((n - x) * c1.a + x * c2.a) / n;
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int d = Diff(c, *p);
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if(d > 30) {
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gcount++;
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gdiff += d;
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if(d >= maxdiff) {
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maxdiff = d;
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color = *p;
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}
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}
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*p++ = c;
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}
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}
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b.SetHotSpot(Point(a, a));
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dst = b;
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}
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};
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Image Unglyph(const Image& m, Color& c, double& gfactor)
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{
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ButtonDecomposer b;
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b.src = Unmultiply(m);
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b.Do();
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c = b.color;
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gfactor = (double)b.gdiff / b.gcount;
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return Premultiply(b.dst);
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}
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Image Unglyph(const Image& m, Color& c)
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{
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double dummy;
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return Unglyph(m, c, dummy);
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}
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Image Unglyph(const Image& m)
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{
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Color dummy;
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return Unglyph(m, dummy);
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}
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Image VertBlend(Image img1, Image img2, int y0, int y1)
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{
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Size sz = img1.GetSize();
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Size sz2 = img2.GetSize();
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sz.cx = min(sz.cx, sz2.cx);
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sz.cy = min(sz.cy, sz2.cy);
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ImageBuffer b(sz);
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for(int y = 0; y < sz.cy; y++)
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if(y >= y1)
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memcpy(b[y], img2[y], sz.cx * sizeof(RGBA));
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else
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if(y >= y0 && y1 > y0) {
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int alpha = 256 * (y - y0) / (y1 - y0);
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RGBA *t = b[y];
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const RGBA *s1 = img1[y];
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const RGBA *s2 = img2[y];
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const RGBA *e = s1 + sz.cx;
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while(s1 < e) {
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t->r = s1->r + ((alpha * (s2->r - s1->r)) >> 8);
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t->g = s1->g + ((alpha * (s2->g - s1->g)) >> 8);
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t->b = s1->b + ((alpha * (s2->b - s1->b)) >> 8);
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t->a = s1->a + ((alpha * (s2->a - s1->a)) >> 8);
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s1++;
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s2++;
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t++;
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}
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}
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else
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memcpy(b[y], img1[y], sz.cx * sizeof(RGBA));
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b.SetHotSpot(img1.GetHotSpot());
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b.Set2ndSpot(img1.Get2ndSpot());
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return b;
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}
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Image HorzBlend(Image img1, Image img2, int x0, int x1)
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{
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Image m = RotateAntiClockwise(VertBlend(RotateClockwise(img1), RotateClockwise(img2), x0, x1));
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ImageBuffer b(m);
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b.SetHotSpot(img1.GetHotSpot());
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b.Set2ndSpot(img1.Get2ndSpot());
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return b;
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}
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Image HorzSymm(Image src) {
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ImageBuffer b(src);
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Size sz = b.GetSize();
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for(int y = 0; y < sz.cy; y++) {
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RGBA *l = b[y];
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for(int x = 0; x < sz.cx / 2; x++)
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l[sz.cx - x - 1] = l[x];
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}
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b.SetHotSpot(src.GetHotSpot());
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b.Set2ndSpot(src.Get2ndSpot());
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return b;
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}
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bool EqLine(const Image& m, int l1, int l2, int x, int width)
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{
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return !memcmp(m[l1] + x, m[l2] + x, width * sizeof(RGBA));
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}
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bool EqLine(const Image& m, int l1, int l2)
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{
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return EqLine(m, l1, l2, 0, m.GetWidth());
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}
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bool IsSingleColor(const Image& m, const Rect& rect_)
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{
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Rect rect = rect_;
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rect.Intersect(m.GetSize());
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if(IsNull(rect))
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return true;
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RGBA c = m[rect.top][rect.left];
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for(int y = rect.top; y < rect.bottom; y++) {
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const RGBA *line = m[y];
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for(int x = rect.left; x < rect.right; x++)
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if(line[x] != c)
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return false;
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}
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return true;
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}
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Image RecreateAlpha(const Image& overwhite, const Image& overblack)
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{
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Size sz = overwhite.GetSize();
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ASSERT(overblack.GetSize() == sz);
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ImageBuffer r(sz);
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const RGBA *ws = overwhite;
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const RGBA *bs = overblack;
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RGBA *t = r;
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RGBA *e = t + r.GetLength();
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while(t < e) {
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t->a = Saturate255(bs->r - ws->r + 255);
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if(t->a) {
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t->r = Saturate255(bs->r * 255 / t->a);
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t->g = Saturate255(bs->g * 255 / t->a);
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t->b = Saturate255(bs->b * 255 / t->a);
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}
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else
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t->r = t->g = t->b = 0;
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t++;
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bs++;
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ws++;
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}
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Premultiply(r);
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return r;
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}
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int ImageMargin(const Image& _m, int p, int dist)
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{
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Image m = Unmultiply(_m);
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Color c = m[p][p];
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int d;
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Size sz = m.GetSize();
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for(d = p; d >= 0; d--)
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if(Diff(m[d][d], c) > dist || Diff(m[sz.cx - d - 1][sz.cy - d - 1], c) > dist)
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break;
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return d + 1;
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}
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int ImageMarginV(const Image& _m, int p, int dist)
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{
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Image m = Unmultiply(_m);
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Size sz = m.GetSize();
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Color c = m[sz.cx / 2][p];
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int d;
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for(d = p; d >= 0; d--)
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if(Diff(m[sz.cx / 2][d], c) > dist || Diff(m[sz.cx / 2][sz.cy - d - 1], c) > dist)
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break;
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return d + 1;
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}
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Rect GetImageMargins(const Image& m, RGBA margin_color)
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{
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Rect r;
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Size isz = m.GetSize();
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for(int pass = 0; pass < 2; pass++) {
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int& y = pass ? r.bottom : r.top;
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for(y = 0; y < isz.cy; y++) {
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const RGBA *s = m[pass ? isz.cy - y - 1 : y];
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for(int x = 0; x < isz.cx; x++)
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if(*s++ != margin_color)
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goto foundy;
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}
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foundy:
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int& x = pass ? r.right : r.left;
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for(x = 0; x < isz.cx; x++) {
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const RGBA *s = m[0] + (pass ? isz.cx - x - 1 : x);
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for(int y = 0; y < isz.cy; y++) {
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if(*s != margin_color)
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goto foundx;
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s += isz.cx;
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}
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}
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foundx:;
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}
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return r;
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}
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ChPartMaker::ChPartMaker(const Image& m)
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{
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image = m;
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border = SColorShadow();
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bg = Null;
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ResetShape();
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}
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void ChPartMaker::ResetShape()
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{
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t = b = l = r = true;
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tl = tr = bl = br = 0;
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}
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Image ChPartMaker::Make() const
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{
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Size sz = image.GetSize();
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ASSERT(sz.cx >= 6 && sz.cy >= 6);
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Image h = image;
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ImageBuffer ib(h);
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for(int x = 0; x < sz.cx; x++) {
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if(t)
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ib[0][x] = x >= tl && x < sz.cx - tr ? border : bg;
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if(b)
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ib[sz.cy - 1][x] = x >= bl && x < sz.cx - br ? border : bg;
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}
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for(int y = 0; y < sz.cy; y++) {
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if(l)
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ib[y][0] = y >= tl && y < sz.cy - bl ? border : bg;
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if(r)
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ib[y][sz.cx - 1] = y >= tr && y < sz.cy - br ? border : bg;
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}
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if(tl == 2)
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ib[1][1] = border;
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if(tr == 2)
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ib[1][sz.cx - 2] = border;
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if(bl == 2)
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ib[sz.cy - 2][1] = border;
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if(br == 2)
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ib[sz.cy - 2][sz.cx - 2] = border;
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int q = max(max(tl, tr), max(br, bl));
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ib.SetHotSpot(Point(q, q));
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ib.Set2ndSpot(Point(sz.cx - q - 1, sz.cy - q - 1));
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return ib;
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}
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}
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