static void
gv_rect_tool_key_press(GvTool *rtool, GdkEventKey *event)
{
GvRectTool *tool = GV_RECT_TOOL(rtool);
if (!gv_rect_tool_configure(tool)) return;
switch (event->keyval)
{
case GDK_Delete:
case GDK_BackSpace:
case GDK_Escape:
if( tool->drawing )
{
tool->drawing = FALSE;
gv_view_area_queue_draw(GV_TOOL(tool)->view);
}
if( tool->reshaping )
{
/* Reopen undo. Push a memento describing the ring addition */
gv_undo_enable();
gv_undo_open();
tool->reshaping = FALSE;
gv_view_area_queue_draw(GV_TOOL(tool)->view);
}
break;
}
}
void
gv_rotate_tool_terminate( GvRotateTool *tool )
{
if( tool->rrmode == RRMODE_DISPLAY )
return;
if( tool->original != NULL
&& gv_shapes_get_shape( tool->layer->data, tool->shape_id) != NULL )
{
gv_shapes_replace_shapes( tool->layer->data, 1, &(tool->shape_id),
&(tool->original), FALSE );
tool->original = NULL;
gv_undo_enable();
gv_undo_open();
}
else if( tool->original != NULL )
{
gv_shape_delete( tool->original );
tool->original = NULL;
gv_undo_enable();
gv_undo_open();
}
tool->shape_id = -1;
tool->rrmode = RRMODE_DISPLAY;
gv_view_area_queue_draw(GV_TOOL(tool)->view);
}
static gboolean
gv_rect_tool_motion_notify(GvTool *r_tool, GdkEventMotion *event)
{
GvRectTool *tool = GV_RECT_TOOL(r_tool);
if (tool->drawing)
{
/* Map pointer position to tail vertex */
gv_view_area_map_pointer(GV_TOOL(tool)->view, event->x, event->y,
&tool->v_tail.x, &tool->v_tail.y);
gv_tool_clamp_to_bounds( GV_TOOL(tool),
&tool->v_tail.x, &tool->v_tail.y );
gv_view_area_queue_draw(GV_TOOL(tool)->view);
}
if (tool->reshaping)
{
/* Map pointer position to tail vertex */
gv_view_area_map_pointer(GV_TOOL(tool)->view, event->x, event->y,
&tool->v_tail.x, &tool->v_tail.y);
gv_rect_tool_reshape( tool, tool->v_tail.x, tool->v_tail.y );
}
return FALSE;
}
void
gv_rotate_tool_set_layer(GvRotateTool *tool, GvShapeLayer *layer)
{
if (GV_TOOL(tool)->view == NULL)
{
g_warning("gv_rotate_tool_set_layer(): inactive tool");
return;
}
if( layer != NULL && gv_data_is_read_only( GV_DATA(layer) ) )
{
g_warning( "gv_rotate_tool_set_layer(): layer is read-only" );
return;
}
gv_rotate_tool_terminate( tool );
tool->shape_id = -1;
/* Disconnect from the previous layer (for draw) */
if (tool->layer)
{
tool->rrmode = RRMODE_DISPLAY;
/** TODO: Not sure that we need to unselect ... try to remove later */
gv_shape_layer_clear_selection(GV_SHAPE_LAYER(tool->layer));
gtk_signal_disconnect_by_data(GTK_OBJECT(tool->layer), (gpointer)tool);
gv_view_area_queue_draw(GV_TOOL(tool)->view);
}
if( layer == NULL )
tool->layer = NULL;
else
tool->layer = GV_SHAPES_LAYER(layer);
if (layer)
{
gv_view_area_set_active_layer(GV_TOOL(tool)->view, GTK_OBJECT(layer));
/* Redraw when the layer draws */
gtk_signal_connect_object_after(GTK_OBJECT(layer), "draw",
GTK_SIGNAL_FUNC(gv_rotate_tool_draw),
GTK_OBJECT(tool));
/* Recover if layer destroyed */
gtk_signal_connect(
GTK_OBJECT(layer), "destroy",
GTK_SIGNAL_FUNC(gv_rotate_tool_layer_destroy),
GTK_OBJECT(tool));
}
}
void
gv_rect_tool_set_layer(GvRectTool *tool, GvShapeLayer *layer)
{
if (GV_TOOL(tool)->view == NULL)
{
g_warning("gv_rect_tool_set_layer(): inactive tool");
return;
}
if( layer != NULL && gv_data_is_read_only( GV_DATA(layer) ) )
{
g_warning( "gv_rect_tool_set_layer(): layer is read-only" );
return;
}
/* Disconnect from the previous layer (for draw) */
if (tool->layer)
{
if (tool->drawing)
tool->drawing = FALSE;
gv_shape_layer_clear_selection(GV_SHAPE_LAYER(tool->layer));
g_signal_handlers_disconnect_matched (tool->layer, G_SIGNAL_MATCH_DATA,
0, 0, NULL, NULL, tool);
gv_view_area_queue_draw(GV_TOOL(tool)->view);
}
if( layer == NULL )
tool->layer = NULL;
else
tool->layer = GV_SHAPES_LAYER(layer);
if (layer)
{
gv_view_area_set_active_layer(GV_TOOL(tool)->view, G_OBJECT(layer));
/* Redraw when the layer draws */
g_signal_connect_object(layer, "draw",
G_CALLBACK(gv_rect_tool_draw),
GV_TOOL(tool), G_CONNECT_SWAPPED | G_CONNECT_AFTER);
/* recover if layer destroyed */
g_signal_connect_swapped(layer, "teardown",
G_CALLBACK(gv_rect_tool_layer_destroy),
tool);
}
}
void
gv_point_tool_set_layer(GvPointTool *tool, GvShapeLayer *layer)
{
if (GV_TOOL(tool)->view == NULL)
{
g_warning("gv_point_tool_set_layer(): inactive tool");
return;
}
if( layer != NULL
&& !GV_IS_POINT_LAYER(layer) && !GV_IS_SHAPES_LAYER(layer) )
{
g_warning( "gv_point_tool_set_layer(): not a point capable layer" );
return;
}
if( layer != NULL && gv_data_is_read_only( GV_DATA(layer) ) )
{
g_warning( "gv_point_tool_set_layer(): layer is read-only" );
return;
}
/* Disconnect from the previous layer */
if (tool->layer)
{
gv_shape_layer_clear_selection(GV_SHAPE_LAYER(tool->layer));
gv_view_area_queue_draw(GV_TOOL(tool)->view);
gtk_signal_disconnect_by_data( GTK_OBJECT(tool->layer),
GTK_OBJECT(tool) );
}
tool->layer = layer;
if (layer)
{
gv_view_area_set_active_layer(GV_TOOL(tool)->view, GTK_OBJECT(layer));
gtk_signal_connect(
GTK_OBJECT(layer), "destroy",
GTK_SIGNAL_FUNC(gv_point_tool_layer_destroy),
GTK_OBJECT(tool));
}
}
static void
gv_rotate_tool_motion_notify(GvTool *r_tool, GdkEventMotion *event)
{
GvRotateTool *tool = GV_ROTATE_TOOL(r_tool);
GvShape *wrk_shape;
if (tool->rrmode == RRMODE_DISPLAY )
return;
wrk_shape = gv_shape_copy(tool->original);
/* Map pointer position to tail vertex */
gv_view_area_map_pointer(GV_TOOL(tool)->view, event->x, event->y,
&tool->v_tail.x, &tool->v_tail.y);
/* Compute rotation from base. */
if( tool->rrmode == RRMODE_ROTATE
|| tool->rrmode == RRMODE_ROTATESCALE )
{
double dx = tool->v_tail.x - tool->v_pivot.x;
double dy = tool->v_tail.y - tool->v_pivot.y;
if( fabs(dy) < fabs(dx)/1000000.0 )
tool->rotation = M_PI/2;
else
tool->rotation = atan(fabs(dx/dy));
if( dy < 0.0 && dx >= 0.0 )
tool->rotation = M_PI - tool->rotation;
else if( dy >= 0.0 && dx < 0.0 )
tool->rotation = -tool->rotation;
else if( dy < 0.0 && dx < 0.0 )
tool->rotation -= M_PI;
tool->rotation = (tool->rotation / M_PI) * 180;
gv_shape_rotate( wrk_shape, tool->rotation );
}
/* Compute Scaling from base. */
if( tool->rrmode == RRMODE_SCALE
|| tool->rrmode == RRMODE_ROTATESCALE )
{
double dx, dy, old_length, new_length;
dx = tool->v_tail.x - tool->v_pivot.x;
dy = tool->v_tail.y - tool->v_pivot.y;
new_length = sqrt(dx*dx + dy*dy);
dx = tool->v_head.x - tool->v_pivot.x;
dy = tool->v_head.y - tool->v_pivot.y;
old_length = sqrt(dx*dx + dy*dy);
tool->scaling = new_length / old_length;
gv_shape_scale( wrk_shape, tool->scaling );
}
/* Apply to the shapes object ... this will create an undo step */
gv_shapes_replace_shapes( tool->layer->data, 1, &(tool->shape_id),
&wrk_shape, FALSE );
gv_view_area_queue_draw(GV_TOOL(tool)->view);
}
static void
gv_rotate_tool_button_press(GvTool *r_tool, GdkEventButton *event)
{
GvRotateTool *tool = GV_ROTATE_TOOL(r_tool);
if( event->state & (GDK_CONTROL_MASK|GDK_SHIFT_MASK) )
return;
/* -------------------------------------------------------------------- */
/* Have we selected an active control point on the scale/rotate */
/* dohickey? */
/* -------------------------------------------------------------------- */
if( tool->rrmode == RRMODE_DISPLAY && tool->shape_id != -1 )
{
gv_view_area_map_pointer(GV_TOOL(tool)->view, event->x, event->y,
&tool->v_head.x, &tool->v_head.y);
/*
** Is this location a hit on an arrow head?
*/
tool->rrmode =
gv_rotate_tool_classify_hit( tool, tool->v_head.x, tool->v_head.y );
/*
** Copy the original state of this shape, and disable undo till we are
** done.
*/
if( tool->rrmode != RRMODE_DISPLAY )
{
if( event->button != 1 )
tool->rrmode = RRMODE_ROTATESCALE;
tool->original = gv_shape_copy(
gv_shapes_get_shape( tool->layer->data, tool->shape_id ));
gv_undo_close();
gv_undo_disable();
}
}
/* -------------------------------------------------------------------- */
/* Are we selecting a shape? Note, currently we cannot clear */
/* our selection in resize/rotate mode - should we be able to? */
/* -------------------------------------------------------------------- */
if (event->button == 1 && tool->rrmode == RRMODE_DISPLAY )
{
int shape_id;
if (!gv_rotate_tool_configure(tool)) return;
if (gv_shape_layer_pick_shape(GV_SHAPE_LAYER(tool->layer),
GV_TOOL(tool)->view,
event->x, event->y, &shape_id))
{
GvShape *shape;
/* Is the shape rotatable? */
shape = gv_shapes_get_shape( tool->layer->data, shape_id );
if( TRUE )
{
gv_shape_layer_clear_selection(
GV_SHAPE_LAYER(tool->layer));
gv_shape_layer_select_shape(
GV_SHAPE_LAYER(tool->layer), shape_id);
tool->shape_id = shape_id;
gv_view_area_queue_draw(GV_TOOL(tool)->view);
}
}
return;
}
}