cursor: add cursor functions.
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
Anthony Liguori
parent
019e78ba6e
commit
254e59506e
@ -48,7 +48,8 @@ common-obj-y = $(block-obj-y)
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common-obj-y += $(net-obj-y)
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common-obj-y += $(qobject-obj-y)
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common-obj-$(CONFIG_LINUX) += $(fsdev-obj-$(CONFIG_LINUX))
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common-obj-y += readline.o console.o async.o qemu-error.o
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common-obj-y += readline.o console.o cursor.o async.o qemu-error.o
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common-obj-y += tcg-runtime.o host-utils.o
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common-obj-y += irq.o ioport.o input.o
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common-obj-$(CONFIG_PTIMER) += ptimer.o
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24
console.h
24
console.h
@ -126,6 +126,27 @@ struct DisplaySurface {
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struct PixelFormat pf;
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};
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/* cursor data format is 32bit RGBA */
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typedef struct QEMUCursor {
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int width, height;
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int hot_x, hot_y;
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int refcount;
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uint32_t data[];
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} QEMUCursor;
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QEMUCursor *cursor_alloc(int width, int height);
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void cursor_get(QEMUCursor *c);
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void cursor_put(QEMUCursor *c);
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QEMUCursor *cursor_builtin_hidden(void);
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QEMUCursor *cursor_builtin_left_ptr(void);
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void cursor_print_ascii_art(QEMUCursor *c, const char *prefix);
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int cursor_get_mono_bpl(QEMUCursor *c);
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void cursor_set_mono(QEMUCursor *c,
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uint32_t foreground, uint32_t background, uint8_t *image,
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int transparent, uint8_t *mask);
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void cursor_get_mono_image(QEMUCursor *c, int foreground, uint8_t *mask);
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void cursor_get_mono_mask(QEMUCursor *c, int transparent, uint8_t *mask);
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struct DisplayChangeListener {
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int idle;
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uint64_t gui_timer_interval;
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@ -158,8 +179,7 @@ struct DisplayState {
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struct DisplayChangeListener* listeners;
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void (*mouse_set)(int x, int y, int on);
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void (*cursor_define)(int width, int height, int bpp, int hot_x, int hot_y,
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uint8_t *image, uint8_t *mask);
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void (*cursor_define)(QEMUCursor *cursor);
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struct DisplayState *next;
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};
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210
cursor.c
Normal file
210
cursor.c
Normal file
@ -0,0 +1,210 @@
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#include "qemu-common.h"
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#include "console.h"
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#include "cursor_hidden.xpm"
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#include "cursor_left_ptr.xpm"
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/* for creating built-in cursors */
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static QEMUCursor *cursor_parse_xpm(const char *xpm[])
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{
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QEMUCursor *c;
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uint32_t ctab[128];
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unsigned int width, height, colors, chars;
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unsigned int line = 0, i, r, g, b, x, y, pixel;
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char name[16];
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uint8_t idx;
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/* parse header line: width, height, #colors, #chars */
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if (sscanf(xpm[line], "%d %d %d %d", &width, &height, &colors, &chars) != 4) {
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fprintf(stderr, "%s: header parse error: \"%s\"\n",
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__FUNCTION__, xpm[line]);
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return NULL;
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}
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if (chars != 1) {
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fprintf(stderr, "%s: chars != 1 not supported\n", __FUNCTION__);
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return NULL;
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}
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line++;
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/* parse color table */
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for (i = 0; i < colors; i++, line++) {
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if (sscanf(xpm[line], "%c c %15s", &idx, name) == 2) {
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if (sscanf(name, "#%02x%02x%02x", &r, &g, &b) == 3) {
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ctab[idx] = (0xff << 24) | (b << 16) | (g << 8) | r;
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continue;
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}
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if (strcmp(name, "None") == 0) {
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ctab[idx] = 0x00000000;
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continue;
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}
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}
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fprintf(stderr, "%s: color parse error: \"%s\"\n",
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__FUNCTION__, xpm[line]);
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return NULL;
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}
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/* parse pixel data */
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c = cursor_alloc(width, height);
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for (pixel = 0, y = 0; y < height; y++, line++) {
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for (x = 0; x < height; x++, pixel++) {
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idx = xpm[line][x];
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c->data[pixel] = ctab[idx];
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}
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}
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return c;
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}
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/* nice for debugging */
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void cursor_print_ascii_art(QEMUCursor *c, const char *prefix)
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{
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uint32_t *data = c->data;
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int x,y;
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for (y = 0; y < c->height; y++) {
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fprintf(stderr, "%s: %2d: |", prefix, y);
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for (x = 0; x < c->width; x++, data++) {
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if ((*data & 0xff000000) != 0xff000000) {
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fprintf(stderr, " "); /* transparent */
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} else if ((*data & 0x00ffffff) == 0x00ffffff) {
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fprintf(stderr, "."); /* white */
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} else if ((*data & 0x00ffffff) == 0x00000000) {
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fprintf(stderr, "X"); /* black */
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} else {
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fprintf(stderr, "o"); /* other */
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}
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}
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fprintf(stderr, "|\n");
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}
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}
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QEMUCursor *cursor_builtin_hidden(void)
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{
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QEMUCursor *c;
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c = cursor_parse_xpm(cursor_hidden_xpm);
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return c;
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}
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QEMUCursor *cursor_builtin_left_ptr(void)
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{
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QEMUCursor *c;
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c = cursor_parse_xpm(cursor_left_ptr_xpm);
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return c;
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}
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QEMUCursor *cursor_alloc(int width, int height)
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{
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QEMUCursor *c;
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int datasize = width * height * sizeof(uint32_t);
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c = qemu_mallocz(sizeof(QEMUCursor) + datasize);
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c->width = width;
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c->height = height;
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c->refcount = 1;
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return c;
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}
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void cursor_get(QEMUCursor *c)
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{
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c->refcount++;
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}
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void cursor_put(QEMUCursor *c)
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{
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if (c == NULL)
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return;
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c->refcount--;
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if (c->refcount)
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return;
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qemu_free(c);
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}
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int cursor_get_mono_bpl(QEMUCursor *c)
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{
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return (c->width + 7) / 8;
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}
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void cursor_set_mono(QEMUCursor *c,
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uint32_t foreground, uint32_t background, uint8_t *image,
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int transparent, uint8_t *mask)
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{
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uint32_t *data = c->data;
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uint8_t bit;
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int x,y,bpl;
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bpl = cursor_get_mono_bpl(c);
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for (y = 0; y < c->height; y++) {
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bit = 0x80;
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for (x = 0; x < c->width; x++, data++) {
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if (transparent && mask[x/8] & bit) {
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*data = 0x00000000;
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} else if (!transparent && !(mask[x/8] & bit)) {
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*data = 0x00000000;
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} else if (image[x/8] & bit) {
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*data = 0xff000000 | foreground;
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} else {
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*data = 0xff000000 | background;
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}
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bit >>= 1;
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if (bit == 0) {
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bit = 0x80;
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}
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}
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mask += bpl;
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image += bpl;
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}
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}
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void cursor_get_mono_image(QEMUCursor *c, int foreground, uint8_t *image)
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{
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uint32_t *data = c->data;
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uint8_t bit;
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int x,y,bpl;
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bpl = cursor_get_mono_bpl(c);
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memset(image, 0, bpl * c->height);
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for (y = 0; y < c->height; y++) {
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bit = 0x80;
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for (x = 0; x < c->width; x++, data++) {
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if (((*data & 0xff000000) == 0xff000000) &&
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((*data & 0x00ffffff) == foreground)) {
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image[x/8] |= bit;
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}
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bit >>= 1;
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if (bit == 0) {
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bit = 0x80;
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}
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}
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image += bpl;
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}
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}
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void cursor_get_mono_mask(QEMUCursor *c, int transparent, uint8_t *mask)
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{
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uint32_t *data = c->data;
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uint8_t bit;
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int x,y,bpl;
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bpl = cursor_get_mono_bpl(c);
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memset(mask, 0, bpl * c->height);
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for (y = 0; y < c->height; y++) {
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bit = 0x80;
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for (x = 0; x < c->width; x++, data++) {
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if ((*data & 0xff000000) != 0xff000000) {
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if (transparent != 0) {
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mask[x/8] |= bit;
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}
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} else {
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if (transparent == 0) {
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mask[x/8] |= bit;
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}
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}
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bit >>= 1;
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if (bit == 0) {
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bit = 0x80;
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}
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}
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mask += bpl;
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}
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}
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37
cursor_hidden.xpm
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37
cursor_hidden.xpm
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@ -0,0 +1,37 @@
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/* XPM */
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static const char *cursor_hidden_xpm[] = {
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"32 32 1 1",
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" c None",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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};
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39
cursor_left_ptr.xpm
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39
cursor_left_ptr.xpm
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@ -0,0 +1,39 @@
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/* XPM */
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static const char *cursor_left_ptr_xpm[] = {
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"32 32 3 1",
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"X c #000000",
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". c #ffffff",
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" c None",
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"X ",
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"XX ",
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"X.X ",
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"X..X ",
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"X...X ",
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"X....X ",
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"X.....X ",
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"X......X ",
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"X.......X ",
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"X........X ",
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"X.....XXXXX ",
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"X..X..X ",
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"X.X X..X ",
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"XX X..X ",
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"X X..X ",
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" X..X ",
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" X..X ",
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" X..X ",
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" XX ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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" ",
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};
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