mirror of https://github.com/mpv-player/mpv
124 lines
4.3 KiB
C
124 lines
4.3 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv 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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* mpv 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 along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "win_state.h"
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#include "vo.h"
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#include "video/mp_image.h"
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static void calc_monitor_aspect(struct mp_vo_opts *opts, int scr_w, int scr_h,
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double *pixelaspect, int *w, int *h)
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{
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*pixelaspect = 1.0 / opts->monitor_pixel_aspect;
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if (scr_w > 0 && scr_h > 0 && opts->force_monitor_aspect)
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*pixelaspect = 1.0 / (opts->force_monitor_aspect * scr_h / scr_w);
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if (*pixelaspect < 1) {
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*h /= *pixelaspect;
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} else {
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*w *= *pixelaspect;
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}
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}
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// Fit *w/*h into the size specified by geo.
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static void apply_autofit(int *w, int *h, int scr_w, int scr_h,
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struct m_geometry *geo, bool allow_upscale)
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{
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if (!geo->wh_valid)
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return;
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int dummy;
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int n_w = *w, n_h = *h;
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m_geometry_apply(&dummy, &dummy, &n_w, &n_h, scr_w, scr_h, geo);
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if (!allow_upscale && *w <= n_w && *h <= n_h)
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return;
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// If aspect mismatches, always make the window smaller than the fit box
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double asp = (double)*w / *h;
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double n_asp = (double)n_w / n_h;
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if (n_asp <= asp) {
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*w = n_w;
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*h = n_w / asp;
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} else {
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*w = n_h * asp;
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*h = n_h;
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}
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}
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// Compute the "suggested" window size and position and return it in *out_geo.
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// screen is the bounding box of the current screen within the virtual desktop.
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// Does not change *vo.
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// Use vo_apply_window_geometry() to copy the result into the vo.
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// NOTE: currently, all windowing backends do their own handling of window
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// geometry additional to this code. This is to deal with initial window
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// placement, fullscreen handling, avoiding resize on reconfig() with no
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// size change, multi-monitor stuff, and possibly more.
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void vo_calc_window_geometry(struct vo *vo, const struct mp_rect *screen,
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struct vo_win_geometry *out_geo)
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{
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struct mp_vo_opts *opts = vo->opts;
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*out_geo = (struct vo_win_geometry){0};
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// The case of calling this function even though no video was configured
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// yet (i.e. vo->params==NULL) happens when vo_opengl creates a hidden
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// window in order to create an OpenGL context.
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struct mp_image_params params = { .d_w = 320, .d_h = 200 };
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if (vo->params)
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params = *vo->params;
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int d_w = params.d_w;
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int d_h = params.d_h;
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if ((vo->driver->caps & VO_CAP_ROTATE90) && params.rotate % 180 == 90)
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MPSWAP(int, d_w, d_h);
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int scr_w = screen->x1 - screen->x0;
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int scr_h = screen->y1 - screen->y0;
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MP_DBG(vo, "screen size: %dx%d\n", scr_w, scr_h);
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calc_monitor_aspect(opts, scr_w, scr_h, &out_geo->monitor_par, &d_w, &d_h);
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apply_autofit(&d_w, &d_h, scr_w, scr_h, &opts->autofit, true);
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apply_autofit(&d_w, &d_h, scr_w, scr_h, &opts->autofit_larger, false);
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out_geo->win.x0 = (int)(scr_w - d_w) / 2;
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out_geo->win.y0 = (int)(scr_h - d_h) / 2;
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m_geometry_apply(&out_geo->win.x0, &out_geo->win.y0, &d_w, &d_h,
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scr_w, scr_h, &opts->geometry);
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out_geo->win.x0 += screen->x0;
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out_geo->win.y0 += screen->y0;
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out_geo->win.x1 = out_geo->win.x0 + d_w;
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out_geo->win.y1 = out_geo->win.y0 + d_h;
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if (opts->geometry.xy_valid || opts->force_window_position)
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out_geo->flags |= VO_WIN_FORCE_POS;
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}
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// Copy the parameters in *geo to the vo fields.
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// (Doesn't do anything else - windowing backends should trigger VO_EVENT_RESIZE
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// to ensure that the VO reinitializes rendering properly.)
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void vo_apply_window_geometry(struct vo *vo, const struct vo_win_geometry *geo)
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{
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vo->dwidth = geo->win.x1 - geo->win.x0;
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vo->dheight = geo->win.y1 - geo->win.y0;
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vo->monitor_par = geo->monitor_par;
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}
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