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Re: [Qemu-devel] [PATCH] console: Implementing blinking of cursor
From: |
Jan Kiszka |
Subject: |
Re: [Qemu-devel] [PATCH] console: Implementing blinking of cursor |
Date: |
Tue, 03 Jul 2012 11:05:50 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
On 2012-07-03 10:59, Alon Levy wrote:
> On Mon, Jul 02, 2012 at 10:20:17AM +0200, Jan Kiszka wrote:
>
> One comment below.
>
> Reviewed-by: Alon Levy <address@hidden>
>
>> Let the text console cursor blink at 5 HZ.
>>
>> Signed-off-by: Jan Kiszka <address@hidden>
>> ---
>> console.c | 26 +++++++++++++++++++++++++-
>> 1 files changed, 25 insertions(+), 1 deletions(-)
>>
>> diff --git a/console.c b/console.c
>> index 6a463f5..29b0f1c 100644
>> --- a/console.c
>> +++ b/console.c
>> @@ -28,6 +28,7 @@
>> //#define DEBUG_CONSOLE
>> #define DEFAULT_BACKSCROLL 512
>> #define MAX_CONSOLES 12
>> +#define CONSOLE_CURSOR_PERIOD 200
>>
>> #define QEMU_RGBA(r, g, b, a) (((a) << 24) | ((r) << 16) | ((g) << 8) | (b))
>> #define QEMU_RGB(r, g, b) QEMU_RGBA(r, g, b, 0xff)
>> @@ -139,6 +140,8 @@ struct TextConsole {
>> TextCell *cells;
>> int text_x[2], text_y[2], cursor_invalidate;
>> int echo;
>> + int cursor_blink_state;
>> + QEMUTimer *cursor_timer;
>>
>> int update_x0;
>> int update_y0;
>> @@ -615,7 +618,7 @@ static void console_show_cursor(TextConsole *s, int show)
>> y += s->total_height;
>> if (y < s->height) {
>> c = &s->cells[y1 * s->width + x];
>> - if (show) {
>> + if (show && s->cursor_blink_state) {
>> TextAttributes t_attrib = s->t_attrib_default;
>> t_attrib.invers = !(t_attrib.invers); /* invert fg and bg */
>> vga_putcharxy(s->ds, x, y, c->ch, &t_attrib);
>> @@ -1083,6 +1086,10 @@ void console_select(unsigned int index)
>> s = consoles[index];
>> if (s) {
>> DisplayState *ds = s->ds;
>> +
>> + if (active_console->cursor_timer) {
>> + qemu_del_timer(active_console->cursor_timer);
>> + }
>> active_console = s;
>> if (ds_get_bits_per_pixel(s->ds)) {
>> ds->surface = qemu_resize_displaysurface(ds, s->g_width,
>> s->g_height);
>> @@ -1090,6 +1097,10 @@ void console_select(unsigned int index)
>> s->ds->surface->width = s->width;
>> s->ds->surface->height = s->height;
>> }
>> + if (s->cursor_timer) {
>> + qemu_mod_timer(s->cursor_timer,
>> + qemu_get_clock_ms(rt_clock) + CONSOLE_CURSOR_PERIOD);
>> + }
>> dpy_resize(s->ds);
>> vga_hw_invalidate();
>> }
>> @@ -1454,6 +1465,16 @@ static void text_console_set_echo(CharDriverState
>> *chr, bool echo)
>> s->echo = echo;
>> }
>>
>> +static void text_console_update_cursor(void *opaque)
>> +{
>> + TextConsole *s = opaque;
>> +
>> + s->cursor_blink_state ^= 1;
>> + vga_hw_invalidate();
>> + qemu_mod_timer(s->cursor_timer,
>> + qemu_get_clock_ms(rt_clock) + CONSOLE_CURSOR_PERIOD);
>> +}
>> +
>> static void text_console_do_init(CharDriverState *chr, DisplayState *ds)
>> {
>> TextConsole *s;
>> @@ -1482,6 +1503,9 @@ static void text_console_do_init(CharDriverState *chr,
>> DisplayState *ds)
>> s->g_height = ds_get_height(s->ds);
>> }
>>
>> + s->cursor_timer =
>> + qemu_new_timer_ms(rt_clock, text_console_update_cursor, s);
>> +
> missing initialization of cursor_blink_state
TextConsole is zero-initialized, so it does not really matter. Can add
it if preferred though.
Thanks for reviewing,
Jan
--
Siemens AG, Corporate Technology, CT RTC ITP SDP-DE
Corporate Competence Center Embedded Linux