From a35a5bb5f3c67f867ac6a21cad479657085f0230 Mon Sep 17 00:00:00 2001 From: wm4 Date: Thu, 19 Jan 2017 16:30:38 +0100 Subject: x11: pseudo HiDPI scaling Scale the window by the assumed DPI scaling factor, using 96 DPI as base. For example, a screen that reports 192 DPI is assumed to have a DPI scale factor 2. The window will then be created with twice the size. For robustness reasons, we accept only integer DPI scales between 1 and 9. We also error out if the X and Y scales are very different, as this most likely indicates a multiscreen system with botched size reporting. I'm not sure if reading the X server's DPI is such a good idea - maybe the Xrdb "Xft.dpi" value should be used instead. The current method follows what xdpyinfo does. This can be disabled with --hidpi-window-scale=no. --- video/out/win_state.c | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-) (limited to 'video/out/win_state.c') diff --git a/video/out/win_state.c b/video/out/win_state.c index 29eaa1b663..3546daadec 100644 --- a/video/out/win_state.c +++ b/video/out/win_state.c @@ -67,13 +67,17 @@ static void apply_autofit(int *w, int *h, int scr_w, int scr_h, // Compute the "suggested" window size and position and return it in *out_geo. // screen is the bounding box of the current screen within the virtual desktop. // Does not change *vo. +// screen: position of the screen on virtual desktop on which the window +// should be placed +// dpi_scale: the DPI multiplier to get from virtual to real coordinates +// (>1 for "hidpi") // Use vo_apply_window_geometry() to copy the result into the vo. // NOTE: currently, all windowing backends do their own handling of window // geometry additional to this code. This is to deal with initial window // placement, fullscreen handling, avoiding resize on reconfig() with no // size change, multi-monitor stuff, and possibly more. -void vo_calc_window_geometry(struct vo *vo, const struct mp_rect *screen, - struct vo_win_geometry *out_geo) +void vo_calc_window_geometry2(struct vo *vo, const struct mp_rect *screen, + double dpi_scale, struct vo_win_geometry *out_geo) { struct mp_vo_opts *opts = vo->opts; @@ -86,12 +90,15 @@ void vo_calc_window_geometry(struct vo *vo, const struct mp_rect *screen, if (vo->params) params = *vo->params; + if (!opts->hidpi_window_scale) + dpi_scale = 1; + int d_w, d_h; mp_image_params_get_dsize(¶ms, &d_w, &d_h); if ((vo->driver->caps & VO_CAP_ROTATE90) && params.rotate % 180 == 90) MPSWAP(int, d_w, d_h); - d_w = MPCLAMP(d_w * opts->window_scale, 1, 16000); - d_h = MPCLAMP(d_h * opts->window_scale, 1, 16000); + d_w = MPCLAMP(d_w * opts->window_scale * dpi_scale, 1, 16000); + d_h = MPCLAMP(d_h * opts->window_scale * dpi_scale, 1, 16000); int scr_w = screen->x1 - screen->x0; int scr_h = screen->y1 - screen->y0; @@ -118,6 +125,12 @@ void vo_calc_window_geometry(struct vo *vo, const struct mp_rect *screen, out_geo->flags |= VO_WIN_FORCE_POS; } +void vo_calc_window_geometry(struct vo *vo, const struct mp_rect *screen, + struct vo_win_geometry *out_geo) +{ + vo_calc_window_geometry2(vo, screen, 1.0, out_geo); +} + // Copy the parameters in *geo to the vo fields. // (Doesn't do anything else - windowing backends should trigger VO_EVENT_RESIZE // to ensure that the VO reinitializes rendering properly.) -- cgit v1.2.3