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/*----------------------------------------------------------------------* |
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* File: rxvtimg.C |
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*----------------------------------------------------------------------* |
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* |
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* All portions of code are copyright by their respective author/s. |
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* Copyright (c) 2012 Marc Lehmann <schmorp@schmorp.de> |
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* Copyright (c) 2012 Emanuele Giaquinta <e.giaquinta@glauco.it> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*---------------------------------------------------------------------*/ |
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|
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#include <string.h> |
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#include <math.h> |
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#include "../config.h" |
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#include "rxvt.h" |
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|
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#if HAVE_IMG |
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|
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typedef rxvt_img::nv nv; |
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|
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namespace |
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{ |
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|
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struct mat3x3 |
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{ |
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nv v[3][3]; |
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|
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mat3x3 () |
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{ |
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} |
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|
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mat3x3 (const nv *matrix) |
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{ |
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memcpy (v, matrix, sizeof (v)); |
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} |
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|
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mat3x3 (nv v11, nv v12, nv v13, nv v21, nv v22, nv v23, nv v31, nv v32, nv v33) |
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{ |
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v[0][0] = v11; v[0][1] = v12; v[0][2] = v13; |
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v[1][0] = v21; v[1][1] = v22; v[1][2] = v23; |
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v[2][0] = v31; v[2][1] = v32; v[2][2] = v33; |
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} |
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|
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mat3x3 invert (); |
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|
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nv *operator [](int i) { return &v[i][0]; } |
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const nv *operator [](int i) const { return &v[i][0]; } |
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|
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operator const nv * () const { return &v[0][0]; } |
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operator nv * () { return &v[0][0]; } |
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|
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// quite inefficient, hopefully gcc pulls the w calc out of any loops |
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nv apply1 (int i, nv x, nv y) |
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{ |
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mat3x3 &m = *this; |
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|
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nv v = m[i][0] * x + m[i][1] * y + m[i][2]; |
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nv w = m[2][0] * x + m[2][1] * y + m[2][2]; |
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|
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return v * (1. / w); |
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} |
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|
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static mat3x3 translate (nv x, nv y); |
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static mat3x3 scale (nv s, nv t); |
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static mat3x3 rotate (nv phi); |
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}; |
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|
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mat3x3 |
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mat3x3::invert () |
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{ |
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mat3x3 &m = *this; |
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mat3x3 inv; |
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|
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nv s0 = m[2][2] * m[1][1] - m[2][1] * m[1][2]; |
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nv s1 = m[2][1] * m[0][2] - m[2][2] * m[0][1]; |
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nv s2 = m[1][2] * m[0][1] - m[1][1] * m[0][2]; |
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|
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nv invdet = 1. / (m[0][0] * s0 + m[1][0] * s1 + m[2][0] * s2); |
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|
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inv[0][0] = invdet * s0; |
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inv[0][1] = invdet * s1; |
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inv[0][2] = invdet * s2; |
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|
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inv[1][0] = invdet * (m[2][0] * m[1][2] - m[2][2] * m[1][0]); |
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inv[1][1] = invdet * (m[2][2] * m[0][0] - m[2][0] * m[0][2]); |
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inv[1][2] = invdet * (m[1][0] * m[0][2] - m[1][2] * m[0][0]); |
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|
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inv[2][0] = invdet * (m[2][1] * m[1][0] - m[2][0] * m[1][1]); |
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inv[2][1] = invdet * (m[2][0] * m[0][1] - m[2][1] * m[0][0]); |
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inv[2][2] = invdet * (m[1][1] * m[0][0] - m[1][0] * m[0][1]); |
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|
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return inv; |
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} |
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|
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static mat3x3 |
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operator *(const mat3x3 &a, const mat3x3 &b) |
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{ |
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mat3x3 r; |
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|
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for (int i = 0; i < 3; ++i) |
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for (int j = 0; j < 3; ++j) |
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r[i][j] = a[i][0] * b[0][j] |
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+ a[i][1] * b[1][j] |
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+ a[i][2] * b[2][j]; |
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|
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return r; |
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} |
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|
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mat3x3 |
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mat3x3::translate (nv x, nv y) |
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{ |
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return mat3x3 ( |
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1, 0, x, |
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0, 1, y, |
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0, 0, 1 |
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); |
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} |
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|
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mat3x3 |
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mat3x3::scale (nv s, nv t) |
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{ |
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return mat3x3 ( |
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s, 0, 0, |
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0, t, 0, |
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0, 0, 1 |
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); |
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} |
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|
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// clockwise |
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mat3x3 |
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mat3x3::rotate (nv phi) |
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{ |
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nv s = sin (phi); |
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nv c = cos (phi); |
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|
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return mat3x3 ( |
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c, -s, 0, |
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s, c, 0, |
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0, 0, 1 |
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); |
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} |
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|
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} |
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|
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#if 0 |
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struct pict |
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{ |
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Display *dpy; |
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Picture pic; |
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|
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operator Picture () const |
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{ |
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return pic; |
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} |
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|
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pict () |
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: pic (0) |
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{ |
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} |
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|
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pict (rxvt_img *img, XRenderPictFormat *format = 0) |
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: dpy (img->s->display->dpy) |
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{ |
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XRenderPictureAttributes pa; |
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pa.repeat = img->repeat; |
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pic = XRenderCreatePicture (dpy, img->pm, format ? format : img->format, CPRepeat, &pa); |
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} |
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|
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~pict () |
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{ |
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if (pic) |
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XRenderFreePicture (dpy, pic); |
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} |
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}; |
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#endif |
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|
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static XRenderPictFormat * |
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find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
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{ |
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if (format->direct.alphaMask) |
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return format; // already has alpha |
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|
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// try to find a suitable alpha format, one bit alpha is enough for our purposes |
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if (format->type == PictTypeDirect) |
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for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) |
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if (f->direct.alphaMask |
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&& f->type == PictTypeDirect |
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&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) |
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&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) |
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&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) |
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return f; |
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|
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// should be a very good fallback |
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return XRenderFindStandardFormat (dpy, PictStandardARGB32); |
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} |
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|
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rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat) |
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: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat), |
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pm(0), ref(0) |
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{ |
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} |
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|
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rxvt_img::rxvt_img (const rxvt_img &img) |
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: s(img.s), x(img.x), y(img.y), w(img.w), h(img.h), format(img.format), repeat(img.repeat), pm(img.pm), ref(img.ref) |
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{ |
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++ref->cnt; |
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} |
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|
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rxvt_img * |
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rxvt_img::new_from_root (rxvt_screen *s) |
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{ |
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Display *dpy = s->display->dpy; |
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unsigned int root_pm_w, root_pm_h; |
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Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]); |
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if (root_pixmap == None) |
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root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]); |
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|
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if (root_pixmap == None) |
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return 0; |
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|
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Window wdummy; |
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int idummy; |
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unsigned int udummy; |
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|
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if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy)) |
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return 0; |
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|
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rxvt_img *img = new rxvt_img ( |
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s, |
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XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)), |
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0, |
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0, |
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root_pm_w, |
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root_pm_h |
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); |
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|
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img->pm = root_pixmap; |
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img->ref = new pixref (root_pm_w, root_pm_h); |
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img->ref->ours = false; |
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|
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return img; |
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} |
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|
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# if HAVE_PIXBUF |
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|
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rxvt_img * |
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rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) |
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{ |
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Display *dpy = s->display->dpy; |
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|
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int width = gdk_pixbuf_get_width (pb); |
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int height = gdk_pixbuf_get_height (pb); |
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|
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if (width > 32767 || height > 32767) // well, we *could* upload in chunks |
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rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n"); |
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|
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// since we require rgb24/argb32 formats from xrender we assume |
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// that both 24 and 32 bpp MUST be supported by any screen that supports xrender |
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|
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int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
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|
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XImage xi; |
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|
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xi.width = width; |
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xi.height = height; |
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xi.xoffset = 0; |
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xi.format = ZPixmap; |
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xi.byte_order = ImageByteOrder (dpy); |
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xi.bitmap_unit = 0; //XY only, unused |
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xi.bitmap_bit_order = 0; //XY only, unused |
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xi.bitmap_pad = BitmapPad (dpy); |
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xi.depth = 32; |
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xi.bytes_per_line = 0; |
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xi.bits_per_pixel = 32; //Z only |
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xi.red_mask = 0x00000000; //Z only, unused |
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xi.green_mask = 0x00000000; //Z only, unused |
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xi.blue_mask = 0x00000000; //Z only, unused |
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xi.obdata = 0; // probably unused |
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|
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bool byte_order_mismatch = byte_order != xi.byte_order; |
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|
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if (!XInitImage (&xi)) |
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rxvt_fatal ("unable to initialise ximage, please report.\n"); |
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|
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if (height > INT_MAX / xi.bytes_per_line) |
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rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n"); |
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|
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xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line); |
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|
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int rowstride = gdk_pixbuf_get_rowstride (pb); |
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bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb); |
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unsigned char *row = gdk_pixbuf_get_pixels (pb); |
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|
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char *line = xi.data; |
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|
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for (int y = 0; y < height; y++) |
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{ |
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unsigned char *src = row; |
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uint32_t *dst = (uint32_t *)line; |
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|
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if (!pb_has_alpha) |
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for (int x = 0; x < width; x++) |
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{ |
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uint8_t r = *src++; |
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uint8_t g = *src++; |
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uint8_t b = *src++; |
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|
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uint32_t v = (255 << 24) | (r << 16) | (g << 8) | b; |
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|
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if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch) |
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v = ecb_bswap32 (v); |
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|
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*dst++ = v; |
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} |
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else |
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for (int x = 0; x < width; x++) |
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{ |
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uint32_t v = *(uint32_t *)src; src += 4; |
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|
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if (ecb_big_endian ()) |
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v = ecb_bswap32 (v); |
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|
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v = ecb_rotl32 (v, 8); // abgr to bgra |
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|
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if (!byte_order_mismatch) |
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v = ecb_bswap32 (v); |
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|
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*dst++ = v; |
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} |
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|
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row += rowstride; |
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line += xi.bytes_per_line; |
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} |
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|
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rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height); |
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img->alloc (); |
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|
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GC gc = XCreateGC (dpy, img->pm, 0, 0); |
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XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height); |
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XFreeGC (dpy, gc); |
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|
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free (xi.data); |
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|
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return img; |
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} |
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|
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rxvt_img * |
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rxvt_img::new_from_file (rxvt_screen *s, const char *filename) |
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{ |
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GError *err = 0; |
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GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); |
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|
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if (!pb) |
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rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); |
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|
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rxvt_img *img = new_from_pixbuf (s, pb); |
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|
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g_object_unref (pb); |
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|
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return img; |
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} |
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|
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# endif |
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|
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void |
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rxvt_img::destroy () |
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{ |
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if (--ref->cnt) |
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return; |
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|
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if (pm && ref->ours) |
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XFreePixmap (s->display->dpy, pm); |
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|
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delete ref; |
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} |
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|
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rxvt_img::~rxvt_img () |
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{ |
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destroy (); |
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} |
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|
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void |
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rxvt_img::alloc () |
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{ |
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pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); |
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ref = new pixref (w, h); |
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} |
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|
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Picture |
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rxvt_img::picture () |
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{ |
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Display *dpy = s->display->dpy; |
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|
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XRenderPictureAttributes pa; |
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pa.repeat = repeat; |
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Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
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|
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return pic; |
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} |
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|
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void |
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rxvt_img::unshare () |
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{ |
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if (ref->cnt == 1 && ref->ours) |
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return; |
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|
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Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth); |
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GC gc = XCreateGC (s->display->dpy, pm, 0, 0); |
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XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0); |
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XFreeGC (s->display->dpy, gc); |
423 |
|
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destroy (); |
425 |
|
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pm = pm2; |
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ref = new pixref (ref->w, ref->h); |
428 |
} |
429 |
|
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void |
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rxvt_img::fill (const rgba &c) |
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{ |
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XRenderColor rc = { c.r, c.g, c.b, c.a }; |
434 |
|
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Display *dpy = s->display->dpy; |
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Picture src = picture (); |
437 |
XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h); |
438 |
XRenderFreePicture (dpy, src); |
439 |
} |
440 |
|
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void |
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rxvt_img::add_alpha () |
443 |
{ |
444 |
if (format->direct.alphaMask) |
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return; |
446 |
|
447 |
Display *dpy = s->display->dpy; |
448 |
|
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rxvt_img *img = new rxvt_img (s, find_alpha_format_for (dpy, format), x, y, w, h, repeat); |
450 |
img->alloc (); |
451 |
|
452 |
Picture src = picture (); |
453 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
454 |
|
455 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
456 |
|
457 |
XRenderFreePicture (dpy, src); |
458 |
XRenderFreePicture (dpy, dst); |
459 |
|
460 |
::swap (img->ref, ref); |
461 |
::swap (img->pm , pm ); |
462 |
|
463 |
delete img; |
464 |
} |
465 |
|
466 |
static void |
467 |
get_gaussian_kernel (int radius, int width, nv *kernel, XFixed *params) |
468 |
{ |
469 |
nv sigma = radius / 2.0; |
470 |
nv scale = sqrt (2.0 * M_PI) * sigma; |
471 |
nv sum = 0.0; |
472 |
|
473 |
for (int i = 0; i < width; i++) |
474 |
{ |
475 |
nv x = i - width / 2; |
476 |
kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
477 |
sum += kernel[i]; |
478 |
} |
479 |
|
480 |
params[0] = XDoubleToFixed (width); |
481 |
params[1] = XDoubleToFixed (1); |
482 |
|
483 |
for (int i = 0; i < width; i++) |
484 |
params[i+2] = XDoubleToFixed (kernel[i] / sum); |
485 |
} |
486 |
|
487 |
rxvt_img * |
488 |
rxvt_img::blur (int rh, int rv) |
489 |
{ |
490 |
if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
491 |
return clone (); |
492 |
|
493 |
Display *dpy = s->display->dpy; |
494 |
int size = max (rh, rv) * 2 + 1; |
495 |
nv *kernel = (nv *)malloc (size * sizeof (nv)); |
496 |
XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
497 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
498 |
img->alloc (); |
499 |
|
500 |
XRenderPictureAttributes pa; |
501 |
pa.repeat = RepeatPad; |
502 |
Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
503 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
504 |
|
505 |
Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); |
506 |
Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); |
507 |
XFreePixmap (dpy, tmp_pm); |
508 |
|
509 |
if (kernel && params) |
510 |
{ |
511 |
size = rh * 2 + 1; |
512 |
get_gaussian_kernel (rh, size, kernel, params); |
513 |
|
514 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
515 |
XRenderComposite (dpy, |
516 |
PictOpSrc, |
517 |
src, |
518 |
None, |
519 |
tmp, |
520 |
0, 0, |
521 |
0, 0, |
522 |
0, 0, |
523 |
w, h); |
524 |
|
525 |
size = rv * 2 + 1; |
526 |
get_gaussian_kernel (rv, size, kernel, params); |
527 |
::swap (params[0], params[1]); |
528 |
|
529 |
XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2); |
530 |
XRenderComposite (dpy, |
531 |
PictOpSrc, |
532 |
tmp, |
533 |
None, |
534 |
dst, |
535 |
0, 0, |
536 |
0, 0, |
537 |
0, 0, |
538 |
w, h); |
539 |
} |
540 |
|
541 |
free (kernel); |
542 |
free (params); |
543 |
|
544 |
XRenderFreePicture (dpy, src); |
545 |
XRenderFreePicture (dpy, dst); |
546 |
XRenderFreePicture (dpy, tmp); |
547 |
|
548 |
return img; |
549 |
} |
550 |
|
551 |
static Picture |
552 |
create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha) |
553 |
{ |
554 |
Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); |
555 |
|
556 |
XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); |
557 |
XRenderPictureAttributes pa; |
558 |
pa.repeat = RepeatNormal; |
559 |
pa.component_alpha = component_alpha; |
560 |
Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa); |
561 |
|
562 |
XFreePixmap (dpy, pixmap); |
563 |
|
564 |
return mask; |
565 |
} |
566 |
|
567 |
static void |
568 |
extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc) |
569 |
{ |
570 |
int32_t x = clamp (c, cl0, cl1); |
571 |
c -= x; |
572 |
xc = x; |
573 |
} |
574 |
|
575 |
static bool |
576 |
extract (int32_t cl0, int32_t cl1, int32_t &r, int32_t &g, int32_t &b, int32_t &a, unsigned short &xr, unsigned short &xg, unsigned short &xb, unsigned short &xa) |
577 |
{ |
578 |
extract (cl0, cl1, r, xr); |
579 |
extract (cl0, cl1, g, xg); |
580 |
extract (cl0, cl1, b, xb); |
581 |
extract (cl0, cl1, a, xa); |
582 |
|
583 |
return xr | xg | xb | xa; |
584 |
} |
585 |
|
586 |
void |
587 |
rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a) |
588 |
{ |
589 |
unshare (); |
590 |
|
591 |
Display *dpy = s->display->dpy; |
592 |
Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
593 |
|
594 |
// loop should not be needed for brightness, as only -1..1 makes sense |
595 |
//while (r | g | b | a) |
596 |
{ |
597 |
unsigned short xr, xg, xb, xa; |
598 |
XRenderColor mask_c; |
599 |
|
600 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
601 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
602 |
|
603 |
if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
604 |
{ |
605 |
XRenderColor mask_w = { 65535, 65535, 65535, 65535 }; |
606 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
607 |
mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing |
608 |
mask_c.green = -mask_c.green; |
609 |
mask_c.blue = -mask_c.blue; |
610 |
mask_c.alpha = -mask_c.alpha; |
611 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
612 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
613 |
} |
614 |
} |
615 |
|
616 |
XRenderFreePicture (dpy, dst); |
617 |
} |
618 |
|
619 |
void |
620 |
rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a) |
621 |
{ |
622 |
if (r < 0 || g < 0 || b < 0 || a < 0) |
623 |
rxvt_fatal ("rxvt_img::contrast does not support negative values.\n"); |
624 |
|
625 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
626 |
img->alloc (); |
627 |
img->fill (rgba (0, 0, 0, 0)); |
628 |
|
629 |
// premultiply (yeah, these are not exact, sue me or fix it) |
630 |
r = (r * (a >> 8)) >> 8; |
631 |
g = (g * (a >> 8)) >> 8; |
632 |
b = (b * (a >> 8)) >> 8; |
633 |
|
634 |
Display *dpy = s->display->dpy; |
635 |
|
636 |
Picture src = picture (); |
637 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
638 |
Picture mul = create_xrender_mask (dpy, pm, True, True); |
639 |
|
640 |
//TODO: this operator does not yet implement some useful contrast |
641 |
while (r | g | b | a) |
642 |
{ |
643 |
unsigned short xr, xg, xb, xa; |
644 |
XRenderColor mask_c; |
645 |
|
646 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
647 |
{ |
648 |
XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1); |
649 |
XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h); |
650 |
} |
651 |
} |
652 |
|
653 |
XRenderFreePicture (dpy, mul); |
654 |
XRenderFreePicture (dpy, dst); |
655 |
XRenderFreePicture (dpy, src); |
656 |
|
657 |
::swap (img->ref, ref); |
658 |
::swap (img->pm , pm ); |
659 |
|
660 |
delete img; |
661 |
} |
662 |
|
663 |
void |
664 |
rxvt_img::draw (rxvt_img *img, int op, nv mask) |
665 |
{ |
666 |
unshare (); |
667 |
|
668 |
Display *dpy = s->display->dpy; |
669 |
Picture src = img->picture (); |
670 |
Picture dst = picture (); |
671 |
Picture mask_p = 0; |
672 |
|
673 |
if (mask != 1.) |
674 |
{ |
675 |
mask_p = create_xrender_mask (dpy, img->pm, False, False); |
676 |
XRenderColor mask_c = { 0, 0, 0, float_to_component (mask) }; |
677 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
678 |
} |
679 |
|
680 |
XRenderComposite (dpy, op, src, mask_p, dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h); |
681 |
|
682 |
XRenderFreePicture (dpy, src); |
683 |
XRenderFreePicture (dpy, dst); |
684 |
|
685 |
if (mask_p) |
686 |
XRenderFreePicture (dpy, mask_p); |
687 |
} |
688 |
|
689 |
rxvt_img * |
690 |
rxvt_img::clone () |
691 |
{ |
692 |
return new rxvt_img (*this); |
693 |
} |
694 |
|
695 |
rxvt_img * |
696 |
rxvt_img::reify () |
697 |
{ |
698 |
if (x == 0 && y == 0 && w == ref->w && h == ref->h) |
699 |
return clone (); |
700 |
|
701 |
Display *dpy = s->display->dpy; |
702 |
|
703 |
// add an alpha channel if... |
704 |
bool alpha = !format->direct.alphaMask // pixmap has none yet |
705 |
&& (x || y) // we need one because of non-zero offset |
706 |
&& repeat == RepeatNone; // and we have no good pixels to fill with |
707 |
|
708 |
rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); |
709 |
img->alloc (); |
710 |
|
711 |
Picture src = picture (); |
712 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
713 |
|
714 |
if (alpha) |
715 |
{ |
716 |
XRenderColor rc = { 0, 0, 0, 0 }; |
717 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles |
718 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, x, y, ref->w, ref->h); |
719 |
} |
720 |
else |
721 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, -x, -y, 0, 0, 0, 0, w, h); |
722 |
|
723 |
XRenderFreePicture (dpy, src); |
724 |
XRenderFreePicture (dpy, dst); |
725 |
|
726 |
return img; |
727 |
} |
728 |
|
729 |
rxvt_img * |
730 |
rxvt_img::sub_rect (int x, int y, int width, int height) |
731 |
{ |
732 |
rxvt_img *img = clone (); |
733 |
|
734 |
img->x -= x; |
735 |
img->y -= y; |
736 |
|
737 |
if (w != width || h != height) |
738 |
{ |
739 |
img->w = width; |
740 |
img->h = height; |
741 |
|
742 |
rxvt_img *img2 = img->reify (); |
743 |
delete img; |
744 |
img = img2; |
745 |
} |
746 |
|
747 |
return img; |
748 |
} |
749 |
|
750 |
rxvt_img * |
751 |
rxvt_img::transform (const nv matrix[3][3]) |
752 |
{ |
753 |
return transform (mat3x3 (&matrix[0][0])); |
754 |
} |
755 |
|
756 |
rxvt_img * |
757 |
rxvt_img::transform (const nv *matrix) |
758 |
{ |
759 |
mat3x3 m (matrix); |
760 |
|
761 |
// calculate new pixel bounding box coordinates |
762 |
nv r[2], rmin[2], rmax[2]; |
763 |
|
764 |
for (int i = 0; i < 2; ++i) |
765 |
{ |
766 |
nv v; |
767 |
|
768 |
v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v; r [i] = v; |
769 |
v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v); |
770 |
v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); |
771 |
v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); |
772 |
} |
773 |
|
774 |
float sx = rmin [0] - x; |
775 |
float sy = rmin [1] - y; |
776 |
|
777 |
// TODO: adjust matrix for subpixel accuracy |
778 |
int nx = floor (rmin [0]); |
779 |
int ny = floor (rmin [1]); |
780 |
|
781 |
int new_width = ceil (rmax [0] - rmin [0]); |
782 |
int new_height = ceil (rmax [1] - rmin [1]); |
783 |
|
784 |
m = mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y); |
785 |
|
786 |
mat3x3 inv = m.invert (); |
787 |
|
788 |
rxvt_img *img = new rxvt_img (s, format, nx, ny, new_width, new_height, repeat); |
789 |
img->alloc (); |
790 |
|
791 |
Display *dpy = s->display->dpy; |
792 |
Picture src = picture (); |
793 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
794 |
|
795 |
XTransform xfrm; |
796 |
|
797 |
for (int i = 0; i < 3; ++i) |
798 |
for (int j = 0; j < 3; ++j) |
799 |
xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]); |
800 |
|
801 |
XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
802 |
XRenderSetPictureTransform (dpy, src, &xfrm); |
803 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, sx, sy, 0, 0, 0, 0, new_width, new_height); |
804 |
|
805 |
XRenderFreePicture (dpy, src); |
806 |
XRenderFreePicture (dpy, dst); |
807 |
|
808 |
return img; |
809 |
} |
810 |
|
811 |
rxvt_img * |
812 |
rxvt_img::scale (int new_width, int new_height) |
813 |
{ |
814 |
if (w == new_width && h == new_height) |
815 |
return clone (); |
816 |
|
817 |
int old_repeat_mode = repeat; |
818 |
repeat = RepeatPad; // not right, but xrender can't properly scale it seems |
819 |
|
820 |
rxvt_img *img = transform (mat3x3::scale (new_width / (nv)w, new_height / (nv)h)); |
821 |
|
822 |
repeat = old_repeat_mode; |
823 |
img->repeat = repeat; |
824 |
|
825 |
return img; |
826 |
} |
827 |
|
828 |
rxvt_img * |
829 |
rxvt_img::rotate (int cx, int cy, nv phi) |
830 |
{ |
831 |
#if 0 |
832 |
{ c, -s, cx - c * cx + s * cy }, |
833 |
{ s, c, cy - s * cx - c * cy }, |
834 |
{ 0, 0, 1 } |
835 |
#endif |
836 |
|
837 |
move (-cx, -cy); |
838 |
rxvt_img *img = transform (mat3x3::rotate (phi)); |
839 |
move ( cx, cy); |
840 |
img->move (cx, cy); |
841 |
|
842 |
return img; |
843 |
} |
844 |
|
845 |
rxvt_img * |
846 |
rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg) |
847 |
{ |
848 |
if (new_format == format) |
849 |
return clone (); |
850 |
|
851 |
rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat); |
852 |
img->alloc (); |
853 |
|
854 |
Display *dpy = s->display->dpy; |
855 |
Picture src = picture (); |
856 |
Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); |
857 |
int op = PictOpSrc; |
858 |
|
859 |
if (format->direct.alphaMask && !new_format->direct.alphaMask) |
860 |
{ |
861 |
// does it have to be that complicated |
862 |
XRenderColor rc = { bg.r, bg.g, bg.b, bg.a }; |
863 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); |
864 |
|
865 |
op = PictOpOver; |
866 |
} |
867 |
|
868 |
XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
869 |
|
870 |
XRenderFreePicture (dpy, src); |
871 |
XRenderFreePicture (dpy, dst); |
872 |
|
873 |
return img; |
874 |
} |
875 |
|
876 |
rxvt_img * |
877 |
rxvt_img::blend (rxvt_img *img, nv factor) |
878 |
{ |
879 |
rxvt_img *img2 = clone (); |
880 |
Display *dpy = s->display->dpy; |
881 |
Picture src = img->picture (); |
882 |
Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); |
883 |
Picture mask = create_xrender_mask (dpy, img->pm, False, False); |
884 |
|
885 |
XRenderColor mask_c; |
886 |
|
887 |
mask_c.alpha = float_to_component (factor); |
888 |
mask_c.red = |
889 |
mask_c.green = |
890 |
mask_c.blue = 0; |
891 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
892 |
|
893 |
XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h); |
894 |
|
895 |
XRenderFreePicture (dpy, src); |
896 |
XRenderFreePicture (dpy, dst); |
897 |
XRenderFreePicture (dpy, mask); |
898 |
|
899 |
return img2; |
900 |
} |
901 |
|
902 |
#endif |
903 |
|