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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>
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1 parent 019e78b commit 254e59506e34efcc92384ef30af3c266e4633c66 @kraxel kraxel committed with Anthony Liguori May 21, 2010
Showing with 310 additions and 3 deletions.
  1. +2 −1 Makefile.objs
  2. +22 −2 console.h
  3. +210 −0 cursor.c
  4. +37 −0 cursor_hidden.xpm
  5. +39 −0 cursor_left_ptr.xpm
View
@@ -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
View
@@ -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;
};
View
210 cursor.c
@@ -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;
+ }
+}
View
@@ -0,0 +1,37 @@
+/* XPM */
+static const char *cursor_hidden_xpm[] = {
+ "32 32 1 1",
+ " c None",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+};
View
@@ -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 ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+ " ",
+};

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