diff options
Diffstat (limited to 'ui')
| -rw-r--r-- | ui/console.c | 34 |
1 files changed, 32 insertions, 2 deletions
diff --git a/ui/console.c b/ui/console.c index a13fb6463b..b30853f6ef 100644 --- a/ui/console.c +++ b/ui/console.c @@ -1300,6 +1300,28 @@ DisplaySurface *qemu_create_displaysurface_from(int width, int height, int bpp, return surface; } +static DisplaySurface *qemu_create_dummy_surface(void) +{ + static const char msg[] = + "This VM has no graphic display device."; + DisplaySurface *surface = qemu_create_displaysurface(640, 480); + pixman_color_t bg = color_table_rgb[0][COLOR_BLACK]; + pixman_color_t fg = color_table_rgb[0][COLOR_WHITE]; + pixman_image_t *glyph; + int len, x, y, i; + + len = strlen(msg); + x = (640/FONT_WIDTH - len) / 2; + y = (480/FONT_HEIGHT - 1) / 2; + for (i = 0; i < len; i++) { + glyph = qemu_pixman_glyph_from_vgafont(FONT_HEIGHT, vgafont16, msg[i]); + qemu_pixman_glyph_render(glyph, surface->image, &fg, &bg, + x+i, y, FONT_WIDTH, FONT_HEIGHT); + qemu_pixman_image_unref(glyph); + } + return surface; +} + void qemu_free_displaysurface(DisplaySurface *surface) { if (surface == NULL) { @@ -1312,6 +1334,7 @@ void qemu_free_displaysurface(DisplaySurface *surface) void register_displaychangelistener(DisplayChangeListener *dcl) { + static DisplaySurface *dummy; QemuConsole *con; trace_displaychangelistener_register(dcl, dcl->ops->dpy_name); @@ -1324,8 +1347,15 @@ void register_displaychangelistener(DisplayChangeListener *dcl) } else { con = active_console; } - if (dcl->ops->dpy_gfx_switch && con) { - dcl->ops->dpy_gfx_switch(dcl, con->surface); + if (dcl->ops->dpy_gfx_switch) { + if (con) { + dcl->ops->dpy_gfx_switch(dcl, con->surface); + } else { + if (!dummy) { + dummy = qemu_create_dummy_surface(); + } + dcl->ops->dpy_gfx_switch(dcl, dummy); + } } } |