qemu-e2k/ui
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
console.c ui/console: Pass placeholder surface to displays 2021-03-04 09:35:36 +01:00
curses_keys.h
curses.c curses: Fixes curses compiling errors. 2020-10-14 06:05:56 +02:00
cursor_hidden.xpm
cursor_left_ptr.xpm
cursor.c
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
input-keymap.c
input-legacy.c
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
keymaps.c vl: extract softmmu/datadir.c 2020-12-10 12:15:18 -05:00
keymaps.h
meson.build configure: Improve OpenGL dependency detections 2021-03-04 09:35:30 +01:00
qemu-pixman.c
qemu-x509.h
qemu.desktop
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
sdl2.c ui: remove gl_ctx_get_current 2021-02-04 15:58:54 +01:00
shader.c
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
vgafont.h
vnc_keysym.h
vnc-auth-sasl.c vnc: fix resource leak when websocket channel error 2020-11-04 08:25:17 +01:00
vnc-auth-sasl.h
vnc-auth-vencrypt.c vnc: fix resource leak when websocket channel error 2020-11-04 08:25:17 +01:00
vnc-auth-vencrypt.h
vnc-enc-hextile-template.h
vnc-enc-hextile.c
vnc-enc-tight.c vnc: Remove the superfluous break 2020-09-01 08:36:53 +02:00
vnc-enc-tight.h
vnc-enc-zlib.c
vnc-enc-zrle.c
vnc-enc-zrle.c.inc
vnc-enc-zrle.h
vnc-enc-zywrle-template.c
vnc-enc-zywrle.h
vnc-jobs.c vnc: fix resource leak when websocket channel error 2020-11-04 08:25:17 +01:00
vnc-jobs.h
vnc-palette.c
vnc-palette.h
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
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
x_keymap.c nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
x_keymap.h