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authorPřemysl Janouch <p.janouch@gmail.com>2011-02-19 22:15:11 +0100
committerPřemysl Janouch <p.janouch@gmail.com>2011-02-19 22:49:21 +0100
commitf074bc6742ea3b1aad8a96aca7c4e81402ea1389 (patch)
tree77fea50f30097a9bfc90f387bb15d2e370f36162 /liblogdiag
parent8aef3fc772b5114dafd050e6d4021245454ec7cb (diff)
downloadlogdiag-f074bc6742ea3b1aad8a96aca7c4e81402ea1389.tar.gz
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Also find terminals on ends of connections.
Diffstat (limited to 'liblogdiag')
-rw-r--r--liblogdiag/ld-diagram-view.c160
1 files changed, 112 insertions, 48 deletions
diff --git a/liblogdiag/ld-diagram-view.c b/liblogdiag/ld-diagram-view.c
index 57978c8..9b9426d 100644
--- a/liblogdiag/ld-diagram-view.c
+++ b/liblogdiag/ld-diagram-view.c
@@ -181,6 +181,18 @@ typedef struct
}
DrawData;
+/*
+ * CheckTerminalsData:
+ */
+typedef struct
+{
+ gboolean found;
+ gdouble distance;
+ LdPoint point;
+ LdPoint terminal;
+}
+CheckTerminalsData;
+
enum
{
PROP_0,
@@ -240,9 +252,15 @@ static gboolean is_object_selected (LdDiagramView *self,
static void queue_draw (LdDiagramView *self, LdRectangle *rect);
static void queue_object_draw (LdDiagramView *self, LdDiagramObject *object);
-/* Symbol terminals. */
+/* Terminals. */
static void check_terminals (LdDiagramView *self, const LdPoint *point);
-static void rotate_terminal (LdPoint *terminal, gint symbol_rotation);
+static void check_terminals_point (LdDiagramView *self, const LdPoint *point,
+ CheckTerminalsData *data);
+void check_connection_terminals (LdDiagramView *self,
+ LdDiagramConnection *connection, CheckTerminalsData *data);
+void check_symbol_terminals (LdDiagramView *self,
+ LdDiagramSymbol *diagram_symbol, CheckTerminalsData *data);
+static void rotate_symbol_terminal (LdPoint *terminal, gint symbol_rotation);
static void hide_terminals (LdDiagramView *self);
static void queue_terminal_draw (LdDiagramView *self, LdPoint *terminal);
@@ -1248,72 +1266,118 @@ queue_object_draw (LdDiagramView *self, LdDiagramObject *object)
}
-/* ===== Symbol terminals ================================================== */
+/* ===== Terminals ========================================================= */
static void
check_terminals (LdDiagramView *self, const LdPoint *point)
{
GList *objects, *iter;
- LdDiagramSymbol *closest_symbol = NULL;
- gdouble closest_distance = TERMINAL_HOVER_TOLERANCE;
- LdPoint closest_terminal;
+ CheckTerminalsData data;
+
+ data.found = FALSE;
+ data.point = *point;
+ data.distance = TERMINAL_HOVER_TOLERANCE;
objects = (GList *) ld_diagram_get_objects (self->priv->diagram);
for (iter = objects; iter; iter = g_list_next (iter))
{
- gdouble object_x, object_y;
- LdDiagramSymbol *diagram_symbol;
- LdSymbol *symbol;
- const LdPointArray *terminals;
- guint i;
- gint rotation;
-
- if (!LD_IS_DIAGRAM_SYMBOL (iter->data))
- continue;
+ if (LD_IS_DIAGRAM_CONNECTION (iter->data))
+ check_connection_terminals (self, iter->data, &data);
+ else if (LD_IS_DIAGRAM_SYMBOL (iter->data))
+ check_symbol_terminals (self, iter->data, &data);
+ }
- diagram_symbol = LD_DIAGRAM_SYMBOL (iter->data);
- symbol = resolve_symbol (self, diagram_symbol);
- if (!symbol)
- continue;
+ hide_terminals (self);
- g_object_get (diagram_symbol, "x", &object_x, "y", &object_y,
- "rotation", &rotation, NULL);
+ if (data.found)
+ {
+ self->priv->terminal_hovered = TRUE;
+ self->priv->terminal = data.terminal;
+ queue_terminal_draw (self, &data.terminal);
+ }
+}
- terminals = ld_symbol_get_terminals (symbol);
- for (i = 0; i < terminals->length; i++)
- {
- LdPoint cur_term, widget_coords;
- gdouble distance;
-
- cur_term = terminals->points[i];
- rotate_terminal (&cur_term, rotation);
- cur_term.x += object_x;
- cur_term.y += object_y;
-
- ld_diagram_view_diagram_to_widget_coords (self,
- cur_term.x, cur_term.y, &widget_coords.x, &widget_coords.y);
- distance = ld_point_distance (&widget_coords, point->x, point->y);
- if (distance <= closest_distance)
- {
- closest_symbol = diagram_symbol;
- closest_distance = distance;
- closest_terminal = cur_term;
- }
- }
+static void
+check_terminals_point (LdDiagramView *self, const LdPoint *point,
+ CheckTerminalsData *data)
+{
+ LdPoint widget_coords;
+ gdouble distance;
+
+ ld_diagram_view_diagram_to_widget_coords (self,
+ point->x, point->y, &widget_coords.x, &widget_coords.y);
+ distance = ld_point_distance (&widget_coords,
+ data->point.x, data->point.y);
+ if (distance <= data->distance)
+ {
+ data->distance = distance;
+ data->terminal = *point;
+ data->found = TRUE;
}
+}
- hide_terminals (self);
+void
+check_connection_terminals (LdDiagramView *self,
+ LdDiagramConnection *connection, CheckTerminalsData *data)
+{
+ LdPointArray *points;
+ gdouble object_x, object_y;
+ guint last;
+
+ g_object_get (connection, "x", &object_x, "y", &object_y, NULL);
- if (closest_symbol)
+ points = ld_diagram_connection_get_points (connection);
+ if (points->length < 2)
{
- self->priv->terminal_hovered = TRUE;
- self->priv->terminal = closest_terminal;
- queue_terminal_draw (self, &closest_terminal);
+ ld_point_array_free (points);
+ return;
+ }
+
+ points->points[0].x += object_x;
+ points->points[0].y += object_y;
+ check_terminals_point (self, &points->points[0], data);
+
+ last = points->length - 1;
+ points->points[last].x += object_x;
+ points->points[last].y += object_y;
+ check_terminals_point (self, &points->points[last], data);
+
+ ld_point_array_free (points);
+}
+
+void
+check_symbol_terminals (LdDiagramView *self,
+ LdDiagramSymbol *diagram_symbol, CheckTerminalsData *data)
+{
+ gdouble object_x, object_y;
+ LdSymbol *symbol;
+ const LdPointArray *terminals;
+ guint i;
+ gint rotation;
+
+ symbol = resolve_symbol (self, diagram_symbol);
+ if (!symbol)
+ return;
+
+ g_object_get (diagram_symbol, "x", &object_x, "y", &object_y,
+ "rotation", &rotation, NULL);
+
+ terminals = ld_symbol_get_terminals (symbol);
+ for (i = 0; i < terminals->length; i++)
+ {
+ LdPoint cur_term;
+
+ cur_term = terminals->points[i];
+ rotate_symbol_terminal (&cur_term, rotation);
+ cur_term.x += object_x;
+ cur_term.y += object_y;
+
+ check_terminals_point (self, &cur_term, data);
}
}
static void
-rotate_terminal (LdPoint *terminal, gint symbol_rotation)
+rotate_symbol_terminal (LdPoint *terminal, gint symbol_rotation)
{
gdouble temp;