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-rw-r--r--src/display/sodipodi-ctrl.cpp494
1 files changed, 494 insertions, 0 deletions
diff --git a/src/display/sodipodi-ctrl.cpp b/src/display/sodipodi-ctrl.cpp
new file mode 100644
index 000000000..71786fd96
--- /dev/null
+++ b/src/display/sodipodi-ctrl.cpp
@@ -0,0 +1,494 @@
+#define INKSCAPE_CTRL_C
+
+/*
+ * SPCtrl
+ *
+ * We render it by hand to reduce allocing/freeing svps & to get clean
+ * (non-aa) images
+ *
+ */
+
+#include "sp-canvas-util.h"
+#include "display-forward.h"
+#include "sodipodi-ctrl.h"
+
+enum {
+ ARG_0,
+ ARG_SHAPE,
+ ARG_MODE,
+ ARG_ANCHOR,
+ ARG_SIZE,
+ ARG_FILLED,
+ ARG_FILL_COLOR,
+ ARG_STROKED,
+ ARG_STROKE_COLOR,
+ ARG_PIXBUF
+};
+
+
+static void sp_ctrl_class_init (SPCtrlClass *klass);
+static void sp_ctrl_init (SPCtrl *ctrl);
+static void sp_ctrl_destroy (GtkObject *object);
+static void sp_ctrl_set_arg (GtkObject *object, GtkArg *arg, guint arg_id);
+
+static void sp_ctrl_update (SPCanvasItem *item, NR::Matrix const &affine, unsigned int flags);
+static void sp_ctrl_render (SPCanvasItem *item, SPCanvasBuf *buf);
+
+static double sp_ctrl_point (SPCanvasItem *item, NR::Point p, SPCanvasItem **actual_item);
+
+
+static SPCanvasItemClass *parent_class;
+
+GtkType
+sp_ctrl_get_type (void)
+{
+ static GtkType ctrl_type = 0;
+ if (!ctrl_type) {
+ static const GTypeInfo ctrl_info = {
+ sizeof (SPCtrlClass),
+ NULL, /* base_init */
+ NULL, /* base_finalize */
+ (GClassInitFunc) sp_ctrl_class_init,
+ NULL, /* class_finalize */
+ NULL, /* class_data */
+ sizeof (SPCtrl),
+ 0, /* n_preallocs */
+ (GInstanceInitFunc) sp_ctrl_init,
+ NULL
+ };
+ ctrl_type = g_type_register_static (SP_TYPE_CANVAS_ITEM, "SPCtrl", &ctrl_info, (GTypeFlags)0);
+ }
+ return ctrl_type;
+}
+
+static void
+sp_ctrl_class_init (SPCtrlClass *klass)
+{
+ GtkObjectClass *object_class;
+ SPCanvasItemClass *item_class;
+
+ object_class = (GtkObjectClass *) klass;
+ item_class = (SPCanvasItemClass *) klass;
+
+ parent_class = (SPCanvasItemClass *)gtk_type_class (sp_canvas_item_get_type ());
+
+ gtk_object_add_arg_type ("SPCtrl::shape", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_SHAPE);
+ gtk_object_add_arg_type ("SPCtrl::mode", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_MODE);
+ gtk_object_add_arg_type ("SPCtrl::anchor", GTK_TYPE_ANCHOR_TYPE, GTK_ARG_READWRITE, ARG_ANCHOR);
+ gtk_object_add_arg_type ("SPCtrl::size", GTK_TYPE_DOUBLE, GTK_ARG_READWRITE, ARG_SIZE);
+ gtk_object_add_arg_type ("SPCtrl::pixbuf", GTK_TYPE_POINTER, GTK_ARG_READWRITE, ARG_PIXBUF);
+ gtk_object_add_arg_type ("SPCtrl::filled", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_FILLED);
+ gtk_object_add_arg_type ("SPCtrl::fill_color", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_FILL_COLOR);
+ gtk_object_add_arg_type ("SPCtrl::stroked", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_STROKED);
+ gtk_object_add_arg_type ("SPCtrl::stroke_color", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_STROKE_COLOR);
+
+ object_class->destroy = sp_ctrl_destroy;
+ object_class->set_arg = sp_ctrl_set_arg;
+
+ item_class->update = sp_ctrl_update;
+ item_class->render = sp_ctrl_render;
+ item_class->point = sp_ctrl_point;
+}
+
+static void
+sp_ctrl_init (SPCtrl *ctrl)
+{
+ ctrl->shape = SP_CTRL_SHAPE_SQUARE;
+ ctrl->mode = SP_CTRL_MODE_COLOR;
+ ctrl->anchor = GTK_ANCHOR_CENTER;
+ ctrl->span = 3;
+ ctrl->defined = TRUE;
+ ctrl->shown = FALSE;
+ ctrl->build = FALSE;
+ ctrl->filled = 1;
+ ctrl->stroked = 0;
+ ctrl->fill_color = 0x000000ff;
+ ctrl->stroke_color = 0x000000ff;
+
+ ctrl->box.x0 = ctrl->box.y0 = ctrl->box.x1 = ctrl->box.y1 = 0;
+ ctrl->cache = NULL;
+ ctrl->pixbuf = NULL;
+}
+
+static void
+sp_ctrl_destroy (GtkObject *object)
+{
+ SPCtrl *ctrl;
+
+ g_return_if_fail (object != NULL);
+ g_return_if_fail (SP_IS_CTRL (object));
+
+ ctrl = SP_CTRL (object);
+
+ if (GTK_OBJECT_CLASS (parent_class)->destroy)
+ (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
+}
+
+static void
+sp_ctrl_set_arg (GtkObject *object, GtkArg *arg, guint arg_id)
+{
+ SPCanvasItem *item;
+ SPCtrl *ctrl;
+ GdkPixbuf * pixbuf = NULL;
+
+ item = SP_CANVAS_ITEM (object);
+ ctrl = SP_CTRL (object);
+
+ switch (arg_id) {
+ case ARG_SHAPE:
+ ctrl->shape = (SPCtrlShapeType)(GTK_VALUE_INT (*arg));
+ ctrl->build = FALSE;
+ sp_canvas_item_request_update (item);
+ break;
+ case ARG_MODE:
+ ctrl->mode = (SPCtrlModeType)(GTK_VALUE_INT (*arg));
+ ctrl->build = FALSE;
+ sp_canvas_item_request_update (item);
+ break;
+ case ARG_ANCHOR:
+ ctrl->anchor = (GtkAnchorType)(GTK_VALUE_INT (*arg));
+ ctrl->build = FALSE;
+ sp_canvas_item_request_update (item);
+ break;
+ case ARG_SIZE:
+ ctrl->span = (gint) ((GTK_VALUE_DOUBLE (*arg) - 1.0) / 2.0 + 0.5);
+ ctrl->defined = (ctrl->span > 0);
+ ctrl->build = FALSE;
+ sp_canvas_item_request_update (item);
+ break;
+ case ARG_FILLED:
+ ctrl->filled = GTK_VALUE_BOOL (*arg);
+ ctrl->build = FALSE;
+ sp_canvas_item_request_update (item);
+ break;
+ case ARG_FILL_COLOR:
+ ctrl->fill_color = GTK_VALUE_INT (*arg);
+ ctrl->build = FALSE;
+ sp_canvas_item_request_update (item);
+ break;
+ case ARG_STROKED:
+ ctrl->stroked = GTK_VALUE_BOOL (*arg);
+ ctrl->build = FALSE;
+ sp_canvas_item_request_update (item);
+ break;
+ case ARG_STROKE_COLOR:
+ ctrl->stroke_color = GTK_VALUE_INT (*arg);
+ ctrl->build = FALSE;
+ sp_canvas_item_request_update (item);
+ break;
+ case ARG_PIXBUF:
+ pixbuf = (GdkPixbuf*)(GTK_VALUE_POINTER (*arg));
+ if (gdk_pixbuf_get_has_alpha (pixbuf)) {
+ ctrl->pixbuf = pixbuf;
+ } else {
+ ctrl->pixbuf = gdk_pixbuf_add_alpha (pixbuf, FALSE, 0, 0, 0);
+ gdk_pixbuf_unref (pixbuf);
+ }
+ ctrl->build = FALSE;
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+sp_ctrl_update (SPCanvasItem *item, NR::Matrix const &affine, unsigned int flags)
+{
+ SPCtrl *ctrl;
+ gint x, y;
+
+ ctrl = SP_CTRL (item);
+
+ if (((SPCanvasItemClass *) parent_class)->update)
+ (* ((SPCanvasItemClass *) parent_class)->update) (item, affine, flags);
+
+ sp_canvas_item_reset_bounds (item);
+
+ if (ctrl->shown) {
+ sp_canvas_request_redraw (item->canvas, ctrl->box.x0, ctrl->box.y0, ctrl->box.x1 + 1, ctrl->box.y1 + 1);
+ }
+
+ if (!ctrl->defined) return;
+
+ x = (gint) ((affine[4] > 0) ? (affine[4] + 0.5) : (affine[4] - 0.5)) - ctrl->span;
+ y = (gint) ((affine[5] > 0) ? (affine[5] + 0.5) : (affine[5] - 0.5)) - ctrl->span;
+
+ switch (ctrl->anchor) {
+ case GTK_ANCHOR_N:
+ case GTK_ANCHOR_CENTER:
+ case GTK_ANCHOR_S:
+ break;
+ case GTK_ANCHOR_NW:
+ case GTK_ANCHOR_W:
+ case GTK_ANCHOR_SW:
+ x += ctrl->span;
+ break;
+ case GTK_ANCHOR_NE:
+ case GTK_ANCHOR_E:
+ case GTK_ANCHOR_SE:
+ x -= (ctrl->span + 1);
+ break;
+ }
+
+ switch (ctrl->anchor) {
+ case GTK_ANCHOR_W:
+ case GTK_ANCHOR_CENTER:
+ case GTK_ANCHOR_E:
+ break;
+ case GTK_ANCHOR_NW:
+ case GTK_ANCHOR_N:
+ case GTK_ANCHOR_NE:
+ y += ctrl->span;
+ break;
+ case GTK_ANCHOR_SW:
+ case GTK_ANCHOR_S:
+ case GTK_ANCHOR_SE:
+ y -= (ctrl->span + 1);
+ break;
+ }
+
+ ctrl->box.x0 = x;
+ ctrl->box.y0 = y;
+ ctrl->box.x1 = ctrl->box.x0 + 2 * ctrl->span;
+ ctrl->box.y1 = ctrl->box.y0 + 2 * ctrl->span;
+
+ sp_canvas_update_bbox (item, ctrl->box.x0, ctrl->box.y0, ctrl->box.x1 + 1, ctrl->box.y1 + 1);
+
+}
+
+static double
+sp_ctrl_point (SPCanvasItem *item, NR::Point p, SPCanvasItem **actual_item)
+{
+ SPCtrl *ctrl = SP_CTRL (item);
+
+ *actual_item = item;
+
+ const double x = p[NR::X];
+ const double y = p[NR::Y];
+
+ if ((x >= ctrl->box.x0) && (x <= ctrl->box.x1) && (y >= ctrl->box.y0) && (y <= ctrl->box.y1)) return 0.0;
+
+ return 1e18;
+}
+
+static void
+sp_ctrl_build_cache (SPCtrl *ctrl)
+{
+ guchar * p, *q;
+ gint size, x, y, z, s, a, side, c;
+ guint8 fr, fg, fb, fa, sr, sg, sb, sa;
+
+ if (ctrl->filled) {
+ fr = (ctrl->fill_color >> 24) & 0xff;
+ fg = (ctrl->fill_color >> 16) & 0xff;
+ fb = (ctrl->fill_color >> 8) & 0xff;
+ fa = (ctrl->fill_color) & 0xff;
+ } else { fr = 0x00; fg = 0x00; fb = 0x00; fa = 0x00; }
+ if (ctrl->stroked) {
+ sr = (ctrl->stroke_color >> 24) & 0xff;
+ sg = (ctrl->stroke_color >> 16) & 0xff;
+ sb = (ctrl->stroke_color >> 8) & 0xff;
+ sa = (ctrl->stroke_color) & 0xff;
+ } else { sr = fr; sg = fg; sb = fb; sa = fa; }
+
+
+ side = (ctrl->span * 2 +1);
+ c = ctrl->span ;
+ g_free (ctrl->cache);
+ size = (side) * (side) * 4;
+ ctrl->cache = (guchar*)g_malloc (size);
+ if (side < 2) return;
+
+ switch (ctrl->shape) {
+ case SP_CTRL_SHAPE_SQUARE:
+ p = ctrl->cache;
+ for (x=0; x < side; x++) { *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa; }
+ for (y = 2; y < side; y++) {
+ *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa;
+ for (x=2; x < side; x++) { *p++ = fr; *p++ = fg; *p++ = fb; *p++ = fa; }
+ *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa;
+ }
+ for (x=0; x < side; x++) { *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa; }
+ ctrl->build = TRUE;
+ break;
+ case SP_CTRL_SHAPE_DIAMOND:
+ p = ctrl->cache;
+ for (y = 0; y < side; y++) {
+ z = abs (c - y);
+ for (x = 0; x < z; x++) {*p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00;}
+ *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa; x++;
+ for (; x < side - z -1; x++) { *p++ = fr; *p++ = fg; *p++ = fb; *p++ = fa; }
+ if (z != c) {*p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa; x++;}
+ for (; x < side; x++) {*p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00;}
+ }
+ break;
+ case SP_CTRL_SHAPE_CIRCLE:
+ p = ctrl->cache;
+ q = p + size -1;
+ s = -1;
+ for (y = 0; y <= c ; y++) {
+ a = abs (c - y);
+ z = (gint)(0.0 + sqrt ((c+.4)*(c+.4) - a*a));
+ x = 0;
+ while (x < c-z) {
+ *p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00;
+ *q-- = 0x00; *q-- = 0x00; *q-- = 0x00; *q-- = 0x00;
+ x++;
+ }
+ do {
+ *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa;
+ *q-- = sa; *q-- = sb; *q-- = sg; *q-- = sr;
+ x++;
+ } while (x < c-s);
+ while (x < MIN(c+s+1, c+z)) {
+ *p++ = fr; *p++ = fg; *p++ = fb; *p++ = fa;
+ *q-- = fa; *q-- = fb; *q-- = fg; *q-- = fr;
+ x++;
+ }
+ do {
+ *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa;
+ *q-- = sa; *q-- = sb; *q-- = sg; *q-- = sr;
+ x++;
+ } while (x <= c+z);
+ while (x < side) {
+ *p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00;
+ *q-- = 0x00; *q-- = 0x00; *q-- = 0x00; *q-- = 0x00;
+ x++;
+ }
+ s = z;
+ }
+ ctrl->build = TRUE;
+ break;
+ case SP_CTRL_SHAPE_CROSS:
+ p = ctrl->cache;
+ for (y = 0; y < side; y++) {
+ z = abs (c - y);
+ for (x = 0; x < c-z; x++) {*p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00;}
+ *p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa; x++;
+ for (; x < c + z; x++) {*p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00;}
+ if (z != 0) {*p++ = sr; *p++ = sg; *p++ = sb; *p++ = sa; x++;}
+ for (; x < side; x++) {*p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00;}
+ }
+ ctrl->build = TRUE;
+ break;
+ case SP_CTRL_SHAPE_BITMAP:
+ if (ctrl->pixbuf) {
+ unsigned char *px;
+ unsigned int rs;
+ px = gdk_pixbuf_get_pixels (ctrl->pixbuf);
+ rs = gdk_pixbuf_get_rowstride (ctrl->pixbuf);
+ for (y = 0; y < side; y++){
+ unsigned char *s, *d;
+ s = px + y * rs;
+ d = ctrl->cache + 4 * side * y;
+ for (x = 0; x < side; x++) {
+ if (s[3] < 0x80) {
+ d[0] = 0x00;
+ d[1] = 0x00;
+ d[2] = 0x00;
+ d[3] = 0x00;
+ } else if (s[0] < 0x80) {
+ d[0] = sr;
+ d[1] = sg;
+ d[2] = sb;
+ d[3] = sa;
+ } else {
+ d[0] = fr;
+ d[1] = fg;
+ d[2] = fb;
+ d[3] = fa;
+ }
+ s += 4;
+ d += 4;
+ }
+ }
+ } else {
+ g_print ("control has no pixmap\n");
+ }
+ ctrl->build = TRUE;
+ break;
+ case SP_CTRL_SHAPE_IMAGE:
+ if (ctrl->pixbuf) {
+ guint r = gdk_pixbuf_get_rowstride (ctrl->pixbuf);
+ guchar * pix;
+ q = gdk_pixbuf_get_pixels (ctrl->pixbuf);
+ p = ctrl->cache;
+ for (y = 0; y < side; y++){
+ pix = q + (y * r);
+ for (x = 0; x < side; x++) {
+ *p++ = *pix++;
+ *p++ = *pix++;
+ *p++ = *pix++;
+ *p++ = *pix++;
+ }
+ }
+ } else { g_print ("control has no pixmap\n"); }
+ ctrl->build = TRUE;
+ break;
+ default:
+ break;
+ }
+
+}
+
+// composite background, foreground, alpha for xor mode
+#define COMPOSE_X(b,f,a) ( ( ((guchar) b) * ((guchar) (0xff - a)) + ((guchar) ((b ^ ~f) + b/4 - (b>127? 63 : 0))) * ((guchar) a) ) / 0xff )
+// composite background, foreground, alpha for color mode
+#define COMPOSE_N(b,f,a) ( ( ((guchar) b) * ((guchar) (0xff - a)) + ((guchar) f) * ((guchar) a) ) / 0xff )
+
+static void
+sp_ctrl_render (SPCanvasItem *item, SPCanvasBuf *buf)
+{
+ gint y0, y1, y, x0,x1,x;
+ guchar * p, * q, a;
+
+ SPCtrl *ctrl = SP_CTRL (item);
+
+ if (!ctrl->defined) return;
+ if ((!ctrl->filled) && (!ctrl->stroked)) return;
+
+ sp_canvas_prepare_buffer (buf);
+
+ // the control-image is rendered into ctrl->cache
+ if (!ctrl->build) sp_ctrl_build_cache (ctrl);
+
+ // then we render from ctrl->cache
+ y0 = MAX (ctrl->box.y0, buf->rect.y0);
+ y1 = MIN (ctrl->box.y1, buf->rect.y1 - 1);
+ x0 = MAX (ctrl->box.x0, buf->rect.x0);
+ x1 = MIN (ctrl->box.x1, buf->rect.x1 - 1);
+
+ bool colormode;
+
+ for (y = y0; y <= y1; y++) {
+ p = buf->buf + (y - buf->rect.y0) * buf->buf_rowstride + (x0 - buf->rect.x0) * 3;
+ q = ctrl->cache + ((y - ctrl->box.y0) * (ctrl->span*2+1) + (x0 - ctrl->box.x0)) * 4;
+ for (x = x0; x <= x1; x++) {
+ a = *(q + 3);
+ // 00000000 is the only way to get invisible; all other colors with alpha 00 are treated as mode_color with alpha ff
+ colormode = false;
+ if (a == 0x00 && !(q[0] == 0x00 && q[1] == 0x00 && q[2] == 0x00)) {
+ a = 0xff;
+ colormode = true;
+ }
+ if (ctrl->mode == SP_CTRL_MODE_COLOR || colormode) {
+ p[0] = COMPOSE_N (p[0], q[0], a);
+ p[1] = COMPOSE_N (p[1], q[1], a);
+ p[2] = COMPOSE_N (p[2], q[2], a);
+ q += 4;
+ p += 3;
+ } else if (ctrl->mode == SP_CTRL_MODE_XOR) {
+ p[0] = COMPOSE_X (p[0], q[0], a);
+ p[1] = COMPOSE_X (p[1], q[1], a);
+ p[2] = COMPOSE_X (p[2], q[2], a);
+ q += 4;
+ p += 3;
+ }
+ }
+ }
+ ctrl->shown = TRUE;
+}
+
+void SPCtrl::moveto (NR::Point const p) {
+ sp_canvas_item_affine_absolute (SP_CANVAS_ITEM (this), NR::Matrix(NR::translate (p)));
+}
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