moving trunk for module inkscape

(bzr r1)

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)));
+}