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From bac090f571e6f413ba2a362ed2d70146b7701d16 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Jonas=20=C3=85dahl?= <jadahl@gmail.com>
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Date: Mon, 24 Feb 2020 17:37:34 +0100
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Subject: [PATCH] crtc-xrandr: Respect configured RANDR panning
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A user may have configured an output to be panning, e.g. using xrandr
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--output <output> --mode <mode> --panning <size>. Respect this by making
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the logical monitor use the panning size, instead of the mode. This
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makes e.g. makes the background cover the whole panning size, and panels
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etc will cover the whole top of the panned area, instead of just the top
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left part covering the monitor if having panned to (0, 0).
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No support is added to configuring panning, i.e. a panned monitor
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configuration cannot be stored in monitors.xml.
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https://gitlab.gnome.org/GNOME/mutter/merge_requests/1085
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---
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src/backends/x11/meta-crtc-xrandr.c | 31 +++++++++++++++++++++++++----
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1 file changed, 27 insertions(+), 4 deletions(-)
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diff --git a/src/backends/x11/meta-crtc-xrandr.c b/src/backends/x11/meta-crtc-xrandr.c
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index d201b8581..dc3f931e3 100644
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--- a/src/backends/x11/meta-crtc-xrandr.c
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+++ b/src/backends/x11/meta-crtc-xrandr.c
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@@ -177,7 +177,14 @@ meta_create_xrandr_crtc (MetaGpuXrandr *gpu_xrandr,
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RRCrtc crtc_id,
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XRRScreenResources *resources)
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{
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+ MetaGpu *gpu = META_GPU (gpu_xrandr);
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+ MetaMonitorManager *monitor_manager = meta_gpu_get_monitor_manager (gpu);
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+ MetaMonitorManagerXrandr *monitor_manager_xrandr =
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+ META_MONITOR_MANAGER_XRANDR (monitor_manager);
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+ Display *xdisplay =
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+ meta_monitor_manager_xrandr_get_xdisplay (monitor_manager_xrandr);
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MetaCrtc *crtc;
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+ XRRPanning *panning;
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unsigned int i;
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GList *modes;
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@@ -185,10 +192,26 @@ meta_create_xrandr_crtc (MetaGpuXrandr *gpu_xrandr,
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crtc->gpu = META_GPU (gpu_xrandr);
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crtc->crtc_id = crtc_id;
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- crtc->rect.x = xrandr_crtc->x;
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- crtc->rect.y = xrandr_crtc->y;
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- crtc->rect.width = xrandr_crtc->width;
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- crtc->rect.height = xrandr_crtc->height;
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+
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+ panning = XRRGetPanning (xdisplay, resources, crtc_id);
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+ if (panning && panning->width > 0 && panning->height > 0)
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+ {
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+ crtc->rect = (MetaRectangle) {
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+ .x = panning->left,
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+ .y = panning->top,
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+ .width = panning->width,
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+ .height = panning->height,
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+ };
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+ }
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+ else
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+ {
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+ crtc->rect = (MetaRectangle) {
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+ .x = xrandr_crtc->x,
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+ .y = xrandr_crtc->y,
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+ .width = xrandr_crtc->width,
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+ .height = xrandr_crtc->height,
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+ };
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+ }
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crtc->is_dirty = FALSE;
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crtc->transform =
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meta_monitor_transform_from_xrandr (xrandr_crtc->rotation);
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--
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2.24.1
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