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qemu/ui
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Akihiko Odaki c821a58ee7 ui/console: Pass placeholder surface to displays 
ui/console used to accept NULL as graphic console surface, but its
semantics was inconsistent among displays:
- cocoa and gtk-egl perform NULL dereference.
- egl-headless, spice and spice-egl do nothing.
- gtk releases underlying resources.
- sdl2-2d and sdl2-gl destroys the window.
- vnc shows a message, "Display output is not active."

Fortunately, only virtio-gpu and virtio-gpu-3d assign NULL so
we can study them to figure out the desired behavior. They assign
NULL *except* for the primary display when the device is realized,
reset, or its scanout is disabled. This effectively destroys
windows for the (uninitialized) secondary displays.

To implement the consistent behavior of display device
realization/reset, this change embeds it to the operation
switching the surface. When NULL was given as a new surface when
switching, ui/console will instead passes a placeholder down
to each display listeners.

sdl destroys the window for a secondary console if its surface is a
placeholder. The other displays simply shows the placeholder.

Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Message-Id: <20210225101316.83940-2-akihiko.odaki@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-03-04 09:35:36 +01:00
..
icons configure: move directory options from config-host.mak to meson 2020-10-26 07:08:38 -04:00
keycodemapdb@6119e6e19a ui: update keycodemapdb submodule commit 2021-01-29 17:07:53 +00:00
shader meson: clean up build_by_default 2020-09-30 19:09:19 +02:00
cocoa.m ui/cocoa: Replace fprintf with error_report 2021-03-04 09:35:36 +01:00
console-gl.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
console.c ui/console: Pass placeholder surface to displays 2021-03-04 09:35:36 +01:00
curses_keys.h curses: support wide input 2019-03-11 08:39:02 +01:00
curses.c curses: Fixes curses compiling errors. 2020-10-14 06:05:56 +02:00
cursor_hidden.xpm
cursor_left_ptr.xpm
cursor.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
egl-context.c ui: remove gl_ctx_get_current 2021-02-04 15:58:54 +01:00
egl-headless.c ui: remove gl_ctx_get_current 2021-02-04 15:58:54 +01:00
egl-helpers.c configure: Improve OpenGL dependency detections 2021-03-04 09:35:30 +01:00
gtk-egl.c configure: Improve OpenGL dependency detections 2021-03-04 09:35:30 +01:00
gtk-gl-area.c configure: Improve OpenGL dependency detections 2021-03-04 09:35:30 +01:00
gtk.c ui/console: Pass placeholder surface to displays 2021-03-04 09:35:36 +01:00
input-barrier.c input-barrier: Register properties as class properties 2020-10-13 15:56:30 -04:00
input-barrier.h ui: add an embedded Barrier client 2019-09-17 13:43:22 +02:00
input-keymap.c meson: rename included C source files to .c.inc 2020-08-21 06:18:30 -04:00
input-legacy.c Clean up inclusion of sysemu/sysemu.h 2019-08-16 13:31:53 +02:00
input-linux.c machine + QOM queue, 2020-10-14 2020-10-15 16:35:06 +01:00
input.c qapi: Use QAPI_LIST_PREPEND() where possible 2020-12-19 10:20:14 +01:00
kbd-state.c Include qemu/queue.h slightly less 2019-08-16 13:31:52 +02:00
keymaps.c vl: extract softmmu/datadir.c 2020-12-10 12:15:18 -05:00
keymaps.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
meson.build configure: Improve OpenGL dependency detections 2021-03-04 09:35:30 +01:00
qemu-pixman.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
qemu-x509.h
qemu.desktop ui: fix icon display for GTK frontend under GNOME Shell with Wayland 2019-01-21 09:43:13 +01:00
sdl2-2d.c ui/console: Pass placeholder surface to displays 2021-03-04 09:35:36 +01:00
sdl2-gl.c ui/console: Pass placeholder surface to displays 2021-03-04 09:35:36 +01:00
sdl2-input.c ui/sdl2-input: use trace-events to debug key events 2020-05-19 09:06:44 +02:00
sdl2.c ui: remove gl_ctx_get_current 2021-02-04 15:58:54 +01:00
shader.c meson: convert ui directory to Meson 2020-08-21 06:30:21 -04:00
spice-app.c spice-app: avoid crash when core spice module doesn't loaded 2021-02-19 15:00:13 +01:00
spice-core.c spice: delay starting until display are initialized 2021-02-04 14:32:40 +01:00
spice-display.c ui/console: Pass placeholder surface to displays 2021-03-04 09:35:36 +01:00
spice-input.c spice: move add_interface() to QemuSpiceOps. 2020-10-21 15:46:14 +02:00
spice-module.c spice: wire up monitor in QemuSpiceOps. 2020-10-21 15:46:14 +02:00
trace-events console: modify ppm_save to take a pixman image ref 2020-11-04 08:02:24 +01:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vgafont.h
vnc_keysym.h ui: add next and prior keysyms 2017-07-27 14:23:09 +02:00
vnc-auth-sasl.c vnc: fix resource leak when websocket channel error 2020-11-04 08:25:17 +01:00
vnc-auth-sasl.h Include qemu/main-loop.h less 2019-08-16 13:31:52 +02:00
vnc-auth-vencrypt.c vnc: fix resource leak when websocket channel error 2020-11-04 08:25:17 +01:00
vnc-auth-vencrypt.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
vnc-enc-hextile-template.h ui: vnc: finish removing TABs 2019-02-05 16:50:18 +01:00
vnc-enc-hextile.c ui: Clean up includes 2016-02-04 17:01:04 +00:00
vnc-enc-tight.c vnc: Remove the superfluous break 2020-09-01 08:36:53 +02:00
vnc-enc-tight.h Clean up header guards that don't match their file name 2016-07-12 16:19:16 +02:00
vnc-enc-zlib.c vnc: fix memory leak when vnc disconnect 2019-09-17 13:45:10 +02:00
vnc-enc-zrle.c meson: rename included C source files to .c.inc 2020-08-21 06:18:30 -04:00
vnc-enc-zrle.c.inc meson: rename included C source files to .c.inc 2020-08-21 06:18:30 -04:00
vnc-enc-zrle.h Clean up header guards that don't match their file name 2016-07-12 16:19:16 +02:00
vnc-enc-zywrle-template.c avoid TABs in files that only contain a few 2019-01-11 15:46:56 +01:00
vnc-enc-zywrle.h ui: vnc: finish removing TABs 2019-02-05 16:50:18 +01:00
vnc-jobs.c vnc: fix resource leak when websocket channel error 2020-11-04 08:25:17 +01:00
vnc-jobs.h ui/vnc: Drop unused vnc_has_job() and vnc_jobs_clear() 2017-02-08 14:59:36 +01:00
vnc-palette.c all: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
vnc-palette.h Include qapi/qmp/qlist.h exactly where needed 2018-02-09 13:52:15 +01:00
vnc-stubs.c vnc: support "-vnc help" 2021-01-23 15:55:07 -05:00
vnc-ws.c vnc: fix resource leak when websocket channel error 2020-11-04 08:25:17 +01:00
vnc-ws.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
vnc.c ui/console: Pass placeholder surface to displays 2021-03-04 09:35:36 +01:00
vnc.h vnc: add support for extended desktop resize 2021-01-15 11:22:43 +01:00
win32-kbd-hook.c ui/win32-kbd-hook: handle AltGr in a hook procedure 2020-05-19 09:06:44 +02:00
x_keymap.c nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
x_keymap.h ui: convert GTK and SDL1 frontends to keycodemapdb 2018-01-25 15:02:00 +01:00