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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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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 inverse (); |
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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::inverse () |
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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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struct composer |
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{ |
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rxvt_img *srcimg, *dstimg; |
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Picture src, dst, msk; |
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Display *dpy; |
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|
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ecb_noinline |
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composer (rxvt_img *srcimg, rxvt_img *dstimg = 0) |
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: srcimg (srcimg), dstimg (dstimg), msk (0) |
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{ |
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if (!this->dstimg) |
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this->dstimg = srcimg->new_empty (); |
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else if (!this->dstimg->pm) // somewhat unsatisfying |
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this->dstimg->alloc (); |
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|
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dpy = srcimg->s->dpy; |
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src = srcimg->picture (); |
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dst = this->dstimg->picture (); |
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} |
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|
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ecb_noinline |
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void mask (bool rgb = true, int w = 1, int h = 1) |
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{ |
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Pixmap pixmap = XCreatePixmap (dpy, srcimg->pm, w, h, rgb ? 32 : 8); |
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|
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XRenderPictFormat *format = XRenderFindStandardFormat (dpy, rgb ? PictStandardARGB32 : PictStandardA8); |
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XRenderPictureAttributes pa; |
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pa.repeat = RepeatNormal; |
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pa.component_alpha = rgb; |
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msk = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa); |
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|
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XFreePixmap (dpy, pixmap); |
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|
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ecb_assume (msk); |
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} |
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|
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// CreateSolidFill creates a very very very weird picture |
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void mask (const rgba &c) |
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{ |
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XRenderColor rc = { |
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c.r * c.a / 65535, |
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c.g * c.a / 65535, |
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c.b * c.a / 65535, |
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c.a |
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}; |
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msk = XRenderCreateSolidFill (dpy, &rc); |
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ecb_assume (msk); |
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} |
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|
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void fill (const rgba &c) |
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{ |
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XRenderColor rc = { |
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c.r * c.a / 65535, |
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c.g * c.a / 65535, |
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c.b * c.a / 65535, |
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c.a |
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}; |
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|
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XRenderFillRectangle (dpy, PictOpSrc, msk, &rc, 0, 0, 1, 1); |
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} |
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|
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operator rxvt_img *() |
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{ |
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return dstimg; |
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} |
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|
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ecb_noinline |
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~composer () |
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{ |
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XRenderFreePicture (dpy, src); |
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XRenderFreePicture (dpy, dst); |
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if (msk) XRenderFreePicture (dpy, msk); |
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} |
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}; |
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} |
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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->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->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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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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uint8_t a = *src; |
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|
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// this is done so it can be jump-free, but newer gcc's clone inner the loop |
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a = pb_has_alpha ? a : 255; |
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src += pb_has_alpha; |
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|
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r = (r * a + 127) / 255; |
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g = (g * a + 127) / 255; |
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b = (b * a + 127) / 255; |
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|
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uint32_t v = (a << 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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|
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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); |
398 |
|
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if (!pb) |
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rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); |
401 |
|
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rxvt_img *img = new_from_pixbuf (s, pb); |
403 |
|
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g_object_unref (pb); |
405 |
|
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return img; |
407 |
} |
408 |
|
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# endif |
410 |
|
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void |
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rxvt_img::destroy () |
413 |
{ |
414 |
if (--ref->cnt) |
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return; |
416 |
|
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if (pm && ref->ours) |
418 |
XFreePixmap (s->dpy, pm); |
419 |
|
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delete ref; |
421 |
} |
422 |
|
423 |
rxvt_img::~rxvt_img () |
424 |
{ |
425 |
destroy (); |
426 |
} |
427 |
|
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void |
429 |
rxvt_img::alloc () |
430 |
{ |
431 |
pm = XCreatePixmap (s->dpy, s->display->root, w, h, format->depth); |
432 |
ref = new pixref (w, h); |
433 |
} |
434 |
|
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rxvt_img * |
436 |
rxvt_img::new_empty () |
437 |
{ |
438 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
439 |
img->alloc (); |
440 |
|
441 |
return img; |
442 |
} |
443 |
|
444 |
Picture |
445 |
rxvt_img::picture () |
446 |
{ |
447 |
Display *dpy = s->dpy; |
448 |
|
449 |
XRenderPictureAttributes pa; |
450 |
pa.repeat = repeat; |
451 |
Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
452 |
|
453 |
return pic; |
454 |
} |
455 |
|
456 |
void |
457 |
rxvt_img::unshare () |
458 |
{ |
459 |
if (ref->cnt == 1 && ref->ours) |
460 |
return; |
461 |
|
462 |
Pixmap pm2 = XCreatePixmap (s->dpy, s->display->root, ref->w, ref->h, format->depth); |
463 |
GC gc = XCreateGC (s->dpy, pm, 0, 0); |
464 |
XCopyArea (s->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0); |
465 |
XFreeGC (s->dpy, gc); |
466 |
|
467 |
destroy (); |
468 |
|
469 |
pm = pm2; |
470 |
ref = new pixref (ref->w, ref->h); |
471 |
} |
472 |
|
473 |
void |
474 |
rxvt_img::fill (const rgba &c, int x, int y, int w, int h) |
475 |
{ |
476 |
XRenderColor rc = { c.r, c.g, c.b, c.a }; |
477 |
|
478 |
Display *dpy = s->dpy; |
479 |
Picture src = picture (); |
480 |
XRenderFillRectangle (dpy, PictOpSrc, src, &rc, x, y, w, h); |
481 |
XRenderFreePicture (dpy, src); |
482 |
} |
483 |
|
484 |
void |
485 |
rxvt_img::fill (const rgba &c) |
486 |
{ |
487 |
fill (c, 0, 0, w, h); |
488 |
} |
489 |
|
490 |
void |
491 |
rxvt_img::add_alpha () |
492 |
{ |
493 |
if (format->direct.alphaMask) |
494 |
return; |
495 |
|
496 |
composer cc (this, new rxvt_img (s, find_alpha_format_for (s->dpy, format), x, y, w, h, repeat)); |
497 |
|
498 |
XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w, h); |
499 |
|
500 |
rxvt_img *img = cc; |
501 |
|
502 |
::swap (img->ref, ref); |
503 |
::swap (img->pm , pm ); |
504 |
|
505 |
delete img; |
506 |
} |
507 |
|
508 |
static void |
509 |
get_gaussian_kernel (int radius, int width, nv *kernel, XFixed *params) |
510 |
{ |
511 |
nv sigma = radius / 2.0; |
512 |
nv scale = sqrt (2.0 * M_PI) * sigma; |
513 |
nv sum = 0.0; |
514 |
|
515 |
for (int i = 0; i < width; i++) |
516 |
{ |
517 |
nv x = i - width / 2; |
518 |
kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
519 |
sum += kernel[i]; |
520 |
} |
521 |
|
522 |
params[0] = XDoubleToFixed (width); |
523 |
params[1] = XDoubleToFixed (1); |
524 |
|
525 |
for (int i = 0; i < width; i++) |
526 |
params[i+2] = XDoubleToFixed (kernel[i] / sum); |
527 |
} |
528 |
|
529 |
rxvt_img * |
530 |
rxvt_img::blur (int rh, int rv) |
531 |
{ |
532 |
if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
533 |
return clone (); |
534 |
|
535 |
Display *dpy = s->dpy; |
536 |
int size = max (rh, rv) * 2 + 1; |
537 |
nv *kernel = (nv *)malloc (size * sizeof (nv)); |
538 |
XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
539 |
rxvt_img *img = new_empty (); |
540 |
|
541 |
XRenderPictureAttributes pa; |
542 |
pa.repeat = RepeatPad; |
543 |
Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
544 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
545 |
|
546 |
Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); |
547 |
Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); |
548 |
XFreePixmap (dpy, tmp_pm); |
549 |
|
550 |
if (kernel && params) |
551 |
{ |
552 |
size = rh * 2 + 1; |
553 |
get_gaussian_kernel (rh, size, kernel, params); |
554 |
|
555 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
556 |
XRenderComposite (dpy, |
557 |
PictOpSrc, |
558 |
src, |
559 |
None, |
560 |
tmp, |
561 |
0, 0, |
562 |
0, 0, |
563 |
0, 0, |
564 |
w, h); |
565 |
|
566 |
size = rv * 2 + 1; |
567 |
get_gaussian_kernel (rv, size, kernel, params); |
568 |
::swap (params[0], params[1]); |
569 |
|
570 |
XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2); |
571 |
XRenderComposite (dpy, |
572 |
PictOpSrc, |
573 |
tmp, |
574 |
None, |
575 |
dst, |
576 |
0, 0, |
577 |
0, 0, |
578 |
0, 0, |
579 |
w, h); |
580 |
} |
581 |
|
582 |
free (kernel); |
583 |
free (params); |
584 |
|
585 |
XRenderFreePicture (dpy, src); |
586 |
XRenderFreePicture (dpy, dst); |
587 |
XRenderFreePicture (dpy, tmp); |
588 |
|
589 |
return img; |
590 |
} |
591 |
|
592 |
rxvt_img * |
593 |
rxvt_img::muladd (nv mul, nv add) |
594 |
{ |
595 |
// STEP 1: double the image width, fill all odd columns with white (==1) |
596 |
|
597 |
composer cc (this, new rxvt_img (s, format, 0, 0, w * 2, h, repeat)); |
598 |
|
599 |
// why the hell does XRenderSetPictureTransform want a writable matrix :( |
600 |
// that keeps us from just static const'ing this matrix. |
601 |
XTransform h_double = { |
602 |
0x08000, 0, 0, |
603 |
0, 0x10000, 0, |
604 |
0, 0, 0x10000 |
605 |
}; |
606 |
|
607 |
XRenderSetPictureFilter (cc.dpy, cc.src, "nearest", 0, 0); |
608 |
XRenderSetPictureTransform (cc.dpy, cc.src, &h_double); |
609 |
XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w * 2, h); |
610 |
|
611 |
cc.mask (false, 2, 1); |
612 |
|
613 |
static const XRenderColor c0 = { 0, 0, 0, 0 }; |
614 |
XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &c0, 0, 0, 1, 1); |
615 |
static const XRenderColor c1 = { 65535, 65535, 65535, 65535 }; |
616 |
XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &c1, 1, 0, 1, 1); |
617 |
|
618 |
Picture white = XRenderCreateSolidFill (cc.dpy, &c1); |
619 |
|
620 |
XRenderComposite (cc.dpy, PictOpOver, white, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w * 2, h); |
621 |
|
622 |
XRenderFreePicture (cc.dpy, white); |
623 |
|
624 |
// STEP 2: convolve the image with a 3x1 filter |
625 |
// a 2x1 filter would obviously suffice, but given the total lack of specification |
626 |
// for xrender, I expect different xrender implementations to randomly diverge. |
627 |
// we also halve the image, and hope for the best (again, for lack of specs). |
628 |
composer cc2 (cc.dstimg); |
629 |
|
630 |
XFixed kernel [] = { |
631 |
XDoubleToFixed (3), XDoubleToFixed (1), |
632 |
XDoubleToFixed (0), XDoubleToFixed (mul), XDoubleToFixed (add) |
633 |
}; |
634 |
|
635 |
XTransform h_halve = { |
636 |
0x20000, 0, 0, |
637 |
0, 0x10000, 0, |
638 |
0, 0, 0x10000 |
639 |
}; |
640 |
|
641 |
XRenderSetPictureFilter (cc.dpy, cc2.src, "nearest", 0, 0); |
642 |
XRenderSetPictureTransform (cc.dpy, cc2.src, &h_halve); |
643 |
XRenderSetPictureFilter (cc.dpy, cc2.src, FilterConvolution, kernel, ecb_array_length (kernel)); |
644 |
|
645 |
XRenderComposite (cc.dpy, PictOpSrc, cc2.src, None, cc2.dst, 0, 0, 0, 0, 0, 0, w * 2, h); |
646 |
|
647 |
return cc2; |
648 |
} |
649 |
|
650 |
ecb_noinline static void |
651 |
extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc) |
652 |
{ |
653 |
int32_t x = clamp (c, cl0, cl1); |
654 |
c -= x; |
655 |
xc = x; |
656 |
} |
657 |
|
658 |
ecb_noinline static bool |
659 |
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) |
660 |
{ |
661 |
extract (cl0, cl1, r, xr); |
662 |
extract (cl0, cl1, g, xg); |
663 |
extract (cl0, cl1, b, xb); |
664 |
extract (cl0, cl1, a, xa); |
665 |
|
666 |
return xr | xg | xb | xa; |
667 |
} |
668 |
|
669 |
void |
670 |
rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a) |
671 |
{ |
672 |
unshare (); |
673 |
|
674 |
Display *dpy = s->dpy; |
675 |
Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
676 |
|
677 |
// loop should not be needed for brightness, as only -1..1 makes sense |
678 |
//while (r | g | b | a) |
679 |
{ |
680 |
unsigned short xr, xg, xb, xa; |
681 |
XRenderColor mask_c; |
682 |
|
683 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
684 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
685 |
|
686 |
if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
687 |
{ |
688 |
XRenderColor mask_w = { 65535, 65535, 65535, 65535 }; |
689 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
690 |
mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing |
691 |
mask_c.green = -mask_c.green; |
692 |
mask_c.blue = -mask_c.blue; |
693 |
mask_c.alpha = -mask_c.alpha; |
694 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
695 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
696 |
} |
697 |
} |
698 |
|
699 |
XRenderFreePicture (dpy, dst); |
700 |
} |
701 |
|
702 |
void |
703 |
rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a) |
704 |
{ |
705 |
if (r < 0 || g < 0 || b < 0 || a < 0) |
706 |
rxvt_fatal ("rxvt_img::contrast does not support negative values.\n"); |
707 |
|
708 |
// premultiply (yeah, these are not exact, sue me or fix it) |
709 |
r = (r * (a >> 8)) >> 8; |
710 |
g = (g * (a >> 8)) >> 8; |
711 |
b = (b * (a >> 8)) >> 8; |
712 |
|
713 |
composer cc (this); |
714 |
rxvt_img *img = cc; |
715 |
img->fill (rgba (0, 0, 0, 0)); |
716 |
|
717 |
cc.mask (true); |
718 |
|
719 |
//TODO: this operator does not yet implement some useful contrast |
720 |
while (r | g | b | a) |
721 |
{ |
722 |
unsigned short xr, xg, xb, xa; |
723 |
XRenderColor mask_c; |
724 |
|
725 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
726 |
{ |
727 |
XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &mask_c, 0, 0, 1, 1); |
728 |
XRenderComposite (cc.dpy, PictOpAdd, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h); |
729 |
} |
730 |
} |
731 |
|
732 |
::swap (img->ref, ref); |
733 |
::swap (img->pm , pm ); |
734 |
|
735 |
delete img; |
736 |
} |
737 |
|
738 |
void |
739 |
rxvt_img::draw (rxvt_img *img, int op, nv mask) |
740 |
{ |
741 |
unshare (); |
742 |
|
743 |
composer cc (img, this); |
744 |
|
745 |
if (mask != 1.) |
746 |
cc.mask (rgba (0, 0, 0, float_to_component (mask))); |
747 |
|
748 |
XRenderComposite (cc.dpy, op, cc.src, cc.msk, cc.dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h); |
749 |
} |
750 |
|
751 |
rxvt_img * |
752 |
rxvt_img::clone () |
753 |
{ |
754 |
return new rxvt_img (*this); |
755 |
} |
756 |
|
757 |
rxvt_img * |
758 |
rxvt_img::reify () |
759 |
{ |
760 |
if (x == 0 && y == 0 && w == ref->w && h == ref->h) |
761 |
return clone (); |
762 |
|
763 |
// add an alpha channel if... |
764 |
bool alpha = !format->direct.alphaMask // pixmap has none yet |
765 |
&& (x || y) // we need one because of non-zero offset |
766 |
&& repeat == RepeatNone; // and we have no good pixels to fill with |
767 |
|
768 |
composer cc (this, new rxvt_img (s, alpha ? find_alpha_format_for (s->dpy, format) : format, |
769 |
0, 0, w, h, repeat)); |
770 |
|
771 |
if (repeat == RepeatNone) |
772 |
{ |
773 |
XRenderColor rc = { 0, 0, 0, 0 }; |
774 |
XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles |
775 |
XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, x, y, ref->w, ref->h); |
776 |
} |
777 |
else |
778 |
XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, -x, -y, 0, 0, 0, 0, w, h); |
779 |
|
780 |
return cc; |
781 |
} |
782 |
|
783 |
rxvt_img * |
784 |
rxvt_img::sub_rect (int x, int y, int width, int height) |
785 |
{ |
786 |
rxvt_img *img = clone (); |
787 |
|
788 |
img->x -= x; |
789 |
img->y -= y; |
790 |
|
791 |
if (w != width || h != height) |
792 |
{ |
793 |
img->w = width; |
794 |
img->h = height; |
795 |
|
796 |
rxvt_img *img2 = img->reify (); |
797 |
delete img; |
798 |
img = img2; |
799 |
} |
800 |
|
801 |
return img; |
802 |
} |
803 |
|
804 |
rxvt_img * |
805 |
rxvt_img::transform (const nv matrix[3][3]) |
806 |
{ |
807 |
return transform (mat3x3 (&matrix[0][0])); |
808 |
} |
809 |
|
810 |
rxvt_img * |
811 |
rxvt_img::transform (const nv *matrix) |
812 |
{ |
813 |
mat3x3 m (matrix); |
814 |
|
815 |
// calculate new pixel bounding box coordinates |
816 |
nv rmin[2], rmax[2]; |
817 |
|
818 |
for (int i = 0; i < 2; ++i) |
819 |
{ |
820 |
nv v; |
821 |
|
822 |
v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v; |
823 |
v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v); |
824 |
v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); |
825 |
v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); |
826 |
} |
827 |
|
828 |
float sx = rmin [0] - x; |
829 |
float sy = rmin [1] - y; |
830 |
|
831 |
// TODO: adjust matrix for subpixel accuracy |
832 |
int nx = floor (rmin [0]); |
833 |
int ny = floor (rmin [1]); |
834 |
|
835 |
int new_width = ceil (rmax [0] - rmin [0]); |
836 |
int new_height = ceil (rmax [1] - rmin [1]); |
837 |
|
838 |
mat3x3 inv = (mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y)).inverse (); |
839 |
|
840 |
composer cc (this, new rxvt_img (s, format, nx, ny, new_width, new_height, repeat)); |
841 |
|
842 |
XTransform xfrm; |
843 |
|
844 |
for (int i = 0; i < 3; ++i) |
845 |
for (int j = 0; j < 3; ++j) |
846 |
xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]); |
847 |
|
848 |
XRenderSetPictureFilter (cc.dpy, cc.src, "good", 0, 0); |
849 |
XRenderSetPictureTransform (cc.dpy, cc.src, &xfrm); |
850 |
XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, sx, sy, 0, 0, 0, 0, new_width, new_height); |
851 |
|
852 |
return cc; |
853 |
} |
854 |
|
855 |
rxvt_img * |
856 |
rxvt_img::scale (int new_width, int new_height) |
857 |
{ |
858 |
if (w == new_width && h == new_height) |
859 |
return clone (); |
860 |
|
861 |
int old_repeat_mode = repeat; |
862 |
repeat = RepeatPad; // not right, but xrender can't properly scale it seems |
863 |
|
864 |
rxvt_img *img = transform (mat3x3::scale (new_width / (nv)w, new_height / (nv)h)); |
865 |
|
866 |
repeat = old_repeat_mode; |
867 |
img->repeat = repeat; |
868 |
|
869 |
return img; |
870 |
} |
871 |
|
872 |
rxvt_img * |
873 |
rxvt_img::rotate (int cx, int cy, nv phi) |
874 |
{ |
875 |
move (-cx, -cy); |
876 |
rxvt_img *img = transform (mat3x3::rotate (phi)); |
877 |
move ( cx, cy); |
878 |
img->move (cx, cy); |
879 |
|
880 |
return img; |
881 |
} |
882 |
|
883 |
rxvt_img * |
884 |
rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg) |
885 |
{ |
886 |
if (new_format == format) |
887 |
return clone (); |
888 |
|
889 |
composer cc (this, new rxvt_img (s, new_format, x, y, w, h, repeat)); |
890 |
|
891 |
int op = PictOpSrc; |
892 |
|
893 |
if (format->direct.alphaMask && !new_format->direct.alphaMask) |
894 |
{ |
895 |
// does it have to be that complicated |
896 |
XRenderColor rc = { bg.r, bg.g, bg.b, bg.a }; |
897 |
XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h); |
898 |
|
899 |
op = PictOpOver; |
900 |
} |
901 |
|
902 |
XRenderComposite (cc.dpy, op, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w, h); |
903 |
|
904 |
return cc; |
905 |
} |
906 |
|
907 |
rxvt_img * |
908 |
rxvt_img::tint (const rgba &c) |
909 |
{ |
910 |
composer cc (this); |
911 |
cc.mask (true); |
912 |
cc.fill (c); |
913 |
|
914 |
XRenderComposite (cc.dpy, PictOpSrc, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h); |
915 |
|
916 |
return cc; |
917 |
} |
918 |
|
919 |
rxvt_img * |
920 |
rxvt_img::shade (nv factor, rgba c) |
921 |
{ |
922 |
clamp_it (factor, -1., 1.); |
923 |
factor++; |
924 |
|
925 |
if (factor > 1) |
926 |
{ |
927 |
c.r = c.r * (2 - factor); |
928 |
c.g = c.g * (2 - factor); |
929 |
c.b = c.b * (2 - factor); |
930 |
} |
931 |
else |
932 |
{ |
933 |
c.r = c.r * factor; |
934 |
c.g = c.g * factor; |
935 |
c.b = c.b * factor; |
936 |
} |
937 |
|
938 |
rxvt_img *img = this->tint (c); |
939 |
|
940 |
if (factor > 1) |
941 |
{ |
942 |
c.a = 0xffff; |
943 |
c.r = |
944 |
c.g = |
945 |
c.b = 0xffff * (factor - 1); |
946 |
|
947 |
img->brightness (c.r, c.g, c.b, c.a); |
948 |
} |
949 |
|
950 |
return img; |
951 |
} |
952 |
|
953 |
rxvt_img * |
954 |
rxvt_img::filter (const char *name, int nparams, nv *params) |
955 |
{ |
956 |
composer cc (this); |
957 |
|
958 |
XFixed *xparams = rxvt_temp_buf<XFixed> (nparams); |
959 |
|
960 |
for (int i = 0; i < nparams; ++i) |
961 |
xparams [i] = XDoubleToFixed (params [i]); |
962 |
|
963 |
XRenderSetPictureFilter (cc.dpy, cc.src, name, xparams, nparams); |
964 |
|
965 |
XRenderComposite (cc.dpy, PictOpSrc, cc.src, 0, cc.dst, 0, 0, 0, 0, 0, 0, w, h); |
966 |
|
967 |
return cc; |
968 |
} |
969 |
|
970 |
#endif |
971 |
|