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cursor: add cursor functions.

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Add a new cursor type to console.h and a bunch of functions to
deal with cursors the (new) cursor.c file.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Gerd Hoffmann 2010-05-21 11:54:32 +02:00 committed by Anthony Liguori
parent 019e78ba6e
commit 254e59506e
5 changed files with 310 additions and 3 deletions
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3
Makefile.objs
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@ -48,7 +48,8 @@ common-obj-y = $(block-obj-y)
common-obj-y += $(net-obj-y)
common-obj-y += $(qobject-obj-y)
common-obj-$(CONFIG_LINUX) += $(fsdev-obj-$(CONFIG_LINUX))
common-obj-y += readline.o console.o async.o qemu-error.o
common-obj-y += readline.o console.o cursor.o async.o qemu-error.o
common-obj-y += tcg-runtime.o host-utils.o
common-obj-y += irq.o ioport.o input.o
common-obj-$(CONFIG_PTIMER) += ptimer.o

24
console.h
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@ -126,6 +126,27 @@ struct DisplaySurface {
struct PixelFormat pf;
};
/* cursor data format is 32bit RGBA */
typedef struct QEMUCursor {
int width, height;
int hot_x, hot_y;
int refcount;
uint32_t data[];
} QEMUCursor;
QEMUCursor *cursor_alloc(int width, int height);
void cursor_get(QEMUCursor *c);
void cursor_put(QEMUCursor *c);
QEMUCursor *cursor_builtin_hidden(void);
QEMUCursor *cursor_builtin_left_ptr(void);
void cursor_print_ascii_art(QEMUCursor *c, const char *prefix);
int cursor_get_mono_bpl(QEMUCursor *c);
void cursor_set_mono(QEMUCursor *c,
uint32_t foreground, uint32_t background, uint8_t *image,
int transparent, uint8_t *mask);
void cursor_get_mono_image(QEMUCursor *c, int foreground, uint8_t *mask);
void cursor_get_mono_mask(QEMUCursor *c, int transparent, uint8_t *mask);
struct DisplayChangeListener {
int idle;
uint64_t gui_timer_interval;
@ -158,8 +179,7 @@ struct DisplayState {
struct DisplayChangeListener* listeners;
void (*mouse_set)(int x, int y, int on);
void (*cursor_define)(int width, int height, int bpp, int hot_x, int hot_y,
uint8_t *image, uint8_t *mask);
void (*cursor_define)(QEMUCursor *cursor);
struct DisplayState *next;
};

210
cursor.c Normal file
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@ -0,0 +1,210 @@
#include "qemu-common.h"
#include "console.h"
#include "cursor_hidden.xpm"
#include "cursor_left_ptr.xpm"
/* for creating built-in cursors */
static QEMUCursor *cursor_parse_xpm(const char *xpm[])
{
QEMUCursor *c;
uint32_t ctab[128];
unsigned int width, height, colors, chars;
unsigned int line = 0, i, r, g, b, x, y, pixel;
char name[16];
uint8_t idx;
/* parse header line: width, height, #colors, #chars */
if (sscanf(xpm[line], "%d %d %d %d", &width, &height, &colors, &chars) != 4) {
fprintf(stderr, "%s: header parse error: \"%s\"\n",
__FUNCTION__, xpm[line]);
return NULL;
}
if (chars != 1) {
fprintf(stderr, "%s: chars != 1 not supported\n", __FUNCTION__);
return NULL;
}
line++;
/* parse color table */
for (i = 0; i < colors; i++, line++) {
if (sscanf(xpm[line], "%c c %15s", &idx, name) == 2) {
if (sscanf(name, "#%02x%02x%02x", &r, &g, &b) == 3) {
ctab[idx] = (0xff << 24) | (b << 16) | (g << 8) | r;
continue;
}
if (strcmp(name, "None") == 0) {
ctab[idx] = 0x00000000;
continue;
}
}
fprintf(stderr, "%s: color parse error: \"%s\"\n",
__FUNCTION__, xpm[line]);
return NULL;
}
/* parse pixel data */
c = cursor_alloc(width, height);
for (pixel = 0, y = 0; y < height; y++, line++) {
for (x = 0; x < height; x++, pixel++) {
idx = xpm[line][x];
c->data[pixel] = ctab[idx];
}
}
return c;
}
/* nice for debugging */
void cursor_print_ascii_art(QEMUCursor *c, const char *prefix)
{
uint32_t *data = c->data;
int x,y;
for (y = 0; y < c->height; y++) {
fprintf(stderr, "%s: %2d: |", prefix, y);
for (x = 0; x < c->width; x++, data++) {
if ((*data & 0xff000000) != 0xff000000) {
fprintf(stderr, " "); /* transparent */
} else if ((*data & 0x00ffffff) == 0x00ffffff) {
fprintf(stderr, "."); /* white */
} else if ((*data & 0x00ffffff) == 0x00000000) {
fprintf(stderr, "X"); /* black */
} else {
fprintf(stderr, "o"); /* other */
}
}
fprintf(stderr, "|\n");
}
}
QEMUCursor *cursor_builtin_hidden(void)
{
QEMUCursor *c;
c = cursor_parse_xpm(cursor_hidden_xpm);
return c;
}
QEMUCursor *cursor_builtin_left_ptr(void)
{
QEMUCursor *c;
c = cursor_parse_xpm(cursor_left_ptr_xpm);
return c;
}
QEMUCursor *cursor_alloc(int width, int height)
{
QEMUCursor *c;
int datasize = width * height * sizeof(uint32_t);
c = qemu_mallocz(sizeof(QEMUCursor) + datasize);
c->width = width;
c->height = height;
c->refcount = 1;
return c;
}
void cursor_get(QEMUCursor *c)
{
c->refcount++;
}
void cursor_put(QEMUCursor *c)
{
if (c == NULL)
return;
c->refcount--;
if (c->refcount)
return;
qemu_free(c);
}
int cursor_get_mono_bpl(QEMUCursor *c)
{
return (c->width + 7) / 8;
}
void cursor_set_mono(QEMUCursor *c,
uint32_t foreground, uint32_t background, uint8_t *image,
int transparent, uint8_t *mask)
{
uint32_t *data = c->data;
uint8_t bit;
int x,y,bpl;
bpl = cursor_get_mono_bpl(c);
for (y = 0; y < c->height; y++) {
bit = 0x80;
for (x = 0; x < c->width; x++, data++) {
if (transparent && mask[x/8] & bit) {
*data = 0x00000000;
} else if (!transparent && !(mask[x/8] & bit)) {
*data = 0x00000000;
} else if (image[x/8] & bit) {
*data = 0xff000000 | foreground;
} else {
*data = 0xff000000 | background;
}
bit >>= 1;
if (bit == 0) {
bit = 0x80;
}
}
mask += bpl;
image += bpl;
}
}
void cursor_get_mono_image(QEMUCursor *c, int foreground, uint8_t *image)
{
uint32_t *data = c->data;
uint8_t bit;
int x,y,bpl;
bpl = cursor_get_mono_bpl(c);
memset(image, 0, bpl * c->height);
for (y = 0; y < c->height; y++) {
bit = 0x80;
for (x = 0; x < c->width; x++, data++) {
if (((*data & 0xff000000) == 0xff000000) &&
((*data & 0x00ffffff) == foreground)) {
image[x/8] |= bit;
}
bit >>= 1;
if (bit == 0) {
bit = 0x80;
}
}
image += bpl;
}
}
void cursor_get_mono_mask(QEMUCursor *c, int transparent, uint8_t *mask)
{
uint32_t *data = c->data;
uint8_t bit;
int x,y,bpl;
bpl = cursor_get_mono_bpl(c);
memset(mask, 0, bpl * c->height);
for (y = 0; y < c->height; y++) {
bit = 0x80;
for (x = 0; x < c->width; x++, data++) {
if ((*data & 0xff000000) != 0xff000000) {
if (transparent != 0) {
mask[x/8] |= bit;
}
} else {
if (transparent == 0) {
mask[x/8] |= bit;
}
}
bit >>= 1;
if (bit == 0) {
bit = 0x80;
}
}
mask += bpl;
}
}

37
cursor_hidden.xpm Normal file
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@ -0,0 +1,37 @@
/* XPM */
static const char *cursor_hidden_xpm[] = {
"32 32 1 1",
" c None",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
};

39
cursor_left_ptr.xpm Normal file
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@ -0,0 +1,39 @@
/* XPM */
static const char *cursor_left_ptr_xpm[] = {
"32 32 3 1",
"X c #000000",
". c #ffffff",
" c None",
"X ",
"XX ",
"X.X ",
"X..X ",
"X...X ",
"X....X ",
"X.....X ",
"X......X ",
"X.......X ",
"X........X ",
"X.....XXXXX ",
"X..X..X ",
"X.X X..X ",
"XX X..X ",
"X X..X ",
" X..X ",
" X..X ",
" X..X ",
" XX ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
" ",
};