void
pagebreak_draw(DDisplay *ddisp, Rectangle *update)
{
DiaRenderer *renderer = ddisp->renderer;
DiaInteractiveRendererInterface *irenderer;
int width = dia_renderer_get_width_pixels(ddisp->renderer);
int height = dia_renderer_get_height_pixels(ddisp->renderer);
irenderer = DIA_GET_INTERACTIVE_RENDERER_INTERFACE (renderer);
if (prefs.pagebreak.visible) {
Diagram *dia = ddisp->diagram;
real origx = 0, origy = 0, pos;
real pwidth = dia->data->paper.width;
real pheight = dia->data->paper.height;
int x,y;
DIA_RENDERER_GET_CLASS(renderer)->set_linewidth(renderer, 0.0);
if (prefs.pagebreak.solid)
DIA_RENDERER_GET_CLASS(renderer)->set_linestyle(renderer, LINESTYLE_SOLID, 0.0);
else
DIA_RENDERER_GET_CLASS(renderer)->set_linestyle(renderer, LINESTYLE_DOTTED,
ddisplay_untransform_length(ddisp, 31));
if (dia->data->paper.fitto) {
origx = dia->data->extents.left;
origy = dia->data->extents.top;
}
/* vertical lines ... */
pos = origx + ceil((update->left - origx) / pwidth) * pwidth;
while (pos <= update->right) {
ddisplay_transform_coords(ddisp, pos,0,&x,&y);
irenderer->draw_pixel_line(renderer,
x, 0, x, height,
&dia->pagebreak_color);
pos += pwidth;
}
/* Horizontal lines: */
pos = origy + ceil((update->top - origy) / pheight) * pheight;
while (pos <= update->bottom) {
ddisplay_transform_coords(ddisp, 0,pos,&x,&y);
irenderer->draw_pixel_line(renderer,
0, y, width, y,
&dia->pagebreak_color);
pos += pheight;
}
}
}
static void
grid_draw_horizontal_lines(DDisplay *ddisp, Rectangle *update, real length)
{
int x, y;
real pos;
int height, width;
guint major_lines = ddisp->diagram->grid.major_lines;
DiaRenderer *renderer = ddisp->renderer;
DiaInteractiveRendererInterface *irenderer;
int major_count = 0;
irenderer = DIA_GET_INTERACTIVE_RENDERER_INTERFACE (renderer);
pos = ceil( update->top / length ) * length;
ddisplay_transform_coords(ddisp, update->left, pos, &x, &y);
ddisplay_transform_coords(ddisp, update->right, update->bottom, &width, &height);
/*
Explanatory note from Lawrence Withers ([email protected]):
Think about it in terms of the maths and the modulo arithmetic; we
have a number P such that P < 0, and we want to find a number Q
such that Q >= 0, but (P % major_count) == (Q % major_count). To
do this, we say Q = P - (P * major_count), which is guaranteed to
give a correct answer if major_count > 0 (since the addition of
anf multiple of major_count won't alter the modulo).
*/
if (major_lines) {
major_count = ROUND (pos/length);
if(major_count < 0) major_count -= major_lines * major_count;
major_count %= major_lines;
}
while (y < height) {
if (major_lines) {
if (major_count == 0)
DIA_RENDERER_GET_CLASS(renderer)->set_linestyle(renderer, LINESTYLE_SOLID, 0.0);
else
DIA_RENDERER_GET_CLASS(renderer)->set_linestyle(renderer, LINESTYLE_DOTTED,
ddisplay_untransform_length(ddisp, 31));
major_count = (major_count+1)%major_lines;
}
irenderer->draw_pixel_line(renderer, x, y, width, y,
&ddisp->diagram->grid.colour);
pos += length;
ddisplay_transform_coords(ddisp, update->left, pos, &x, &y);
}
}
gboolean
grid_step (DDisplay *ddisp, GtkOrientation orientation,
real *start, int *ipos, gboolean *is_major)
{
real length;
real pos;
guint major_lines = ddisp->diagram->grid.major_lines;
int x, y;
int major_count = 1;
/* length from the diagram settings - but always dynamic */
calculate_dynamic_grid (ddisp, &length, &length);
pos = ceil(*start / length) * length;
pos += length;
if (major_lines) {
major_count = ROUND (pos/length);
if(major_count < 0) major_count -= major_lines * major_count;
major_count %= major_lines;
}
ddisplay_transform_coords(ddisp,
orientation == GTK_ORIENTATION_HORIZONTAL ? pos : 0,
orientation == GTK_ORIENTATION_VERTICAL ? pos : 0,
&x, &y);
*start = pos;
*ipos = (orientation == GTK_ORIENTATION_HORIZONTAL ? x : y);
*is_major = (major_count == 0);
return TRUE;
}
void
handle_draw(Handle *handle, DDisplay *ddisp)
{
gboolean some_selected;
int x,y;
DiaRenderer *renderer = ddisp->renderer;
DiaInteractiveRendererInterface *irenderer =
DIA_GET_INTERACTIVE_RENDERER_INTERFACE (ddisp->renderer);
const Color *color;
ddisplay_transform_coords(ddisp, handle->pos.x, handle->pos.y, &x, &y);
/* change handle color to reflect different behaviour for multiple selected */
/* this code relies on the fact that only selected objects get their handles drawn */
some_selected = g_list_length (ddisp->diagram->data->selected) > 1;
if (handle->connected_to != NULL) {
color = &handle_color_connected[handle->type + (some_selected ? NUM_HANDLE_TYPES : 0)];
} else {
color = &handle_color[handle->type + (some_selected ? NUM_HANDLE_TYPES : 0)];
}
DIA_RENDERER_GET_CLASS(renderer)->set_linewidth(renderer, 0.0);
DIA_RENDERER_GET_CLASS(renderer)->set_linestyle(renderer, LINESTYLE_SOLID);
DIA_RENDERER_GET_CLASS(renderer)->set_linejoin(renderer, LINEJOIN_MITER);
DIA_RENDERER_GET_CLASS(renderer)->set_fillstyle(renderer, FILLSTYLE_SOLID);
irenderer->fill_pixel_rect(renderer,
x - HANDLE_SIZE/2 + 1,
y - HANDLE_SIZE/2 + 1,
HANDLE_SIZE-2, HANDLE_SIZE-2,
/* it does not change the color, but does not reflect taht in the signature */
(Color *)color);
irenderer->draw_pixel_rect(renderer,
x - HANDLE_SIZE/2,
y - HANDLE_SIZE/2,
HANDLE_SIZE-1, HANDLE_SIZE-1,
&color_black);
if (handle->connect_type != HANDLE_NONCONNECTABLE) {
irenderer->draw_pixel_line
(renderer,
x - HANDLE_SIZE/2, y - HANDLE_SIZE/2,
x + HANDLE_SIZE/2, y + HANDLE_SIZE/2,
&color_black);
irenderer->draw_pixel_line
(renderer,
x - HANDLE_SIZE/2, y + HANDLE_SIZE/2,
x + HANDLE_SIZE/2, y - HANDLE_SIZE/2,
&color_black);
}
}
static void
grid_draw_vertical_lines(DDisplay *ddisp, Rectangle *update, real length)
{
int x = 0, y = 0;
real pos;
int height, width;
guint major_lines = ddisp->diagram->grid.major_lines;
DiaRenderer *renderer = ddisp->renderer;
DiaInteractiveRendererInterface *irenderer;
int major_count = 0;
irenderer = DIA_GET_INTERACTIVE_RENDERER_INTERFACE (renderer);
pos = ceil( update->left / length ) * length;
ddisplay_transform_coords(ddisp, update->right, update->bottom, &width, &height);
if (major_lines) {
major_count = ROUND (pos/length);
if(major_count < 0) major_count -= major_lines * major_count;
major_count %= major_lines;
}
while (x < width) {
ddisplay_transform_coords(ddisp, pos, update->top, &x, &y);
if (major_lines) {
if (major_count == 0)
DIA_RENDERER_GET_CLASS(renderer)->set_linestyle(renderer, LINESTYLE_SOLID, 0.0);
else
DIA_RENDERER_GET_CLASS(renderer)->set_linestyle(renderer, LINESTYLE_DOTTED,
ddisplay_untransform_length(ddisp, 31));
major_count = (major_count+1)%major_lines;
}
irenderer->draw_pixel_line(renderer, x, y, x, height,
&ddisp->diagram->grid.colour);
pos += length;
}
}
static void
connectionpoint_draw(ConnectionPoint *conpoint,
DDisplay *ddisp,
DiaRenderer *renderer,
DiaInteractiveRendererInterface *irenderer,
Color *color)
{
int x,y;
Point *point = &conpoint->pos;
ddisplay_transform_coords(ddisp, point->x, point->y, &x, &y);
irenderer->draw_pixel_line (renderer,
x-CP_SZ,y-CP_SZ,
x+CP_SZ,y+CP_SZ,
color);
irenderer->draw_pixel_line (renderer,
x+CP_SZ,y-CP_SZ,
x-CP_SZ,y+CP_SZ,
color);
}
static void
modify_motion (ModifyTool *tool,
GdkEventMotion *event,
DDisplay *ddisp)
{
Point to;
Point now, delta, full_delta;
gboolean auto_scroll, vertical = FALSE;
ConnectionPoint *connectionpoint = NULL;
ObjectChange *objchange = NULL;
ddisplay_untransform_coords(ddisp, event->x, event->y, &to.x, &to.y);
if (tool->state==STATE_NONE) {
DiaObject *obj = NULL;
Handle *handle = NULL;
diagram_find_closest_handle (ddisp->diagram, &handle, &obj, &to);
if (handle && handle->type != HANDLE_NON_MOVABLE
&& handle->id >= HANDLE_RESIZE_NW && handle->id <= HANDLE_RESIZE_SE
&& handle_is_clicked(ddisp, handle, &to)
&& g_list_length (ddisp->diagram->data->selected) == 1)
ddisplay_set_all_cursor (get_direction_cursor (CURSOR_DIRECTION_0 + handle->id));
else
ddisplay_set_all_cursor_name (NULL, "default");
return; /* Fast path... */
}
auto_scroll = ddisplay_autoscroll(ddisp, event->x, event->y);
if (!modify_move_already(tool, ddisp, &to)) return;
switch (tool->state) {
case STATE_MOVE_OBJECT:
if (tool->orig_pos == NULL) {
GList *list, *pla;
int i;
DiaObject *obj;
/* consider non-selected children affected */
pla = list = parent_list_affected(ddisp->diagram->data->selected);
tool->orig_pos = g_new(Point, g_list_length(list));
i=0;
while (list != NULL) {
obj = (DiaObject *) list->data;
tool->orig_pos[i] = obj->position;
list = g_list_next(list); i++;
}
g_list_free (pla);
}
if (tool->break_connections)
diagram_unconnect_selected(ddisp->diagram); /* Pushes UNDO info */
if (gdk_event_to_dia_ModifierKeys (event->state) & MODIFIER_CONTROL) {
full_delta = to;
point_sub(&full_delta, &tool->start_at);
vertical = (fabs(full_delta.x) < fabs(full_delta.y));
}
point_add(&to, &tool->move_compensate);
snap_to_grid(ddisp, &to.x, &to.y);
now = tool->object->position;
delta = to;
point_sub(&delta, &now);
if (gdk_event_to_dia_ModifierKeys (event->state) & MODIFIER_CONTROL) {
/* Up-down or left-right */
if (vertical) {
delta.x = tool->start_at.x + tool->move_compensate.x - now.x;
} else {
delta.y = tool->start_at.y + tool->move_compensate.y - now.y;
}
}
object_add_updates_list(ddisp->diagram->data->selected, ddisp->diagram);
objchange = object_list_move_delta(ddisp->diagram->data->selected, &delta);
if (objchange != NULL) {
undo_object_change(ddisp->diagram, tool->object, objchange);
}
object_add_updates_list(ddisp->diagram->data->selected, ddisp->diagram);
object_add_updates(tool->object, ddisp->diagram);
/* Put current mouse position in status bar */
{
gchar *postext;
GtkStatusbar *statusbar = GTK_STATUSBAR (ddisp->modified_status);
guint context_id = gtk_statusbar_get_context_id (statusbar, "ObjectPos");
gtk_statusbar_pop (statusbar, context_id);
postext = g_strdup_printf("%.3f, %.3f - %.3f, %.3f",
tool->object->bounding_box.left,
tool->object->bounding_box.top,
tool->object->bounding_box.right,
tool->object->bounding_box.bottom);
gtk_statusbar_pop (statusbar, context_id);
gtk_statusbar_push (statusbar, context_id, postext);
g_free(postext);
}
diagram_update_connections_selection(ddisp->diagram);
diagram_flush(ddisp->diagram);
break;
case STATE_MOVE_HANDLE:
full_delta = to;
point_sub(&full_delta, &tool->start_at);
/* make sure resizing is restricted to its parent */
/* if resize was blocked by parent, that means the resizing was
outward, thus it won't bother the children so we don't have to
check the children */
if (!parent_handle_move_out_check(tool->object, &to))
parent_handle_move_in_check(tool->object, &to, &tool->start_at);
if (gdk_event_to_dia_ModifierKeys (event->state) & MODIFIER_CONTROL)
vertical = (fabs(full_delta.x) < fabs(full_delta.y));
highlight_reset_all(ddisp->diagram);
if ((tool->handle->connect_type != HANDLE_NONCONNECTABLE)) {
/* Move to ConnectionPoint if near: */
connectionpoint = object_find_connectpoint_display (ddisp,
&to,
tool->object, TRUE);
if (connectionpoint != NULL) {
DiaHighlightType type;
to = connectionpoint->pos;
if (connectionpoint->flags & CP_FLAGS_MAIN) {
type = DIA_HIGHLIGHT_CONNECTIONPOINT_MAIN;
} else {
type = DIA_HIGHLIGHT_CONNECTIONPOINT;
}
highlight_object(connectionpoint->object, type, ddisp->diagram);
ddisplay_set_all_cursor_name (NULL, "crosshair");
}
}
if (connectionpoint == NULL) {
/* No connectionopoint near, then snap to grid (if enabled) */
snap_to_grid(ddisp, &to.x, &to.y);
ddisplay_set_all_cursor_name (NULL, "move");
}
if (tool->break_connections) {
/* break connections to the handle currently selected. */
if (tool->handle->connected_to!=NULL) {
Change *change = undo_unconnect (ddisp->diagram,
tool->object,
tool->handle);
(change->apply)(change, ddisp->diagram);
}
}
if (gdk_event_to_dia_ModifierKeys (event->state) & MODIFIER_CONTROL) {
/* Up-down or left-right */
if (vertical) {
to.x = tool->start_at.x;
} else {
to.y = tool->start_at.y;
}
}
if (tool->orig_pos == NULL) {
tool->orig_pos = g_new(Point, 1);
*tool->orig_pos = tool->handle->pos;
}
/* Put current mouse position in status bar */
{
gchar *postext;
GtkStatusbar *statusbar = GTK_STATUSBAR (ddisp->modified_status);
guint context_id = gtk_statusbar_get_context_id (statusbar, "ObjectPos");
if (tool->object) { /* play safe */
real w = tool->object->bounding_box.right - tool->object->bounding_box.left;
real h = tool->object->bounding_box.bottom - tool->object->bounding_box.top;
postext = g_strdup_printf("%.3f, %.3f (%.3fx%.3f)", to.x, to.y, w, h);
} else {
postext = g_strdup_printf("%.3f, %.3f", to.x, to.y);
}
gtk_statusbar_pop (statusbar, context_id);
gtk_statusbar_push (statusbar, context_id, postext);
g_free(postext);
}
object_add_updates(tool->object, ddisp->diagram);
/* Handle undo */
if (tool->object)
objchange = tool->object->ops->move_handle(tool->object, tool->handle,
&to, connectionpoint,
HANDLE_MOVE_USER, gdk_event_to_dia_ModifierKeys(event->state));
if (objchange != NULL) {
undo_object_change(ddisp->diagram, tool->object, objchange);
}
object_add_updates(tool->object, ddisp->diagram);
diagram_update_connections_selection(ddisp->diagram);
diagram_flush(ddisp->diagram);
break;
case STATE_BOX_SELECT:
tool->end_box = to;
ddisplay_transform_coords (ddisp,
MIN (tool->start_box.x, tool->end_box.x),
MIN (tool->start_box.y, tool->end_box.y),
&tool->x1, &tool->y1);
ddisplay_transform_coords (ddisp,
MAX (tool->start_box.x, tool->end_box.x),
MAX (tool->start_box.y, tool->end_box.y),
&tool->x2, &tool->y2);
dia_interactive_renderer_set_selection (ddisp->renderer,
TRUE,
tool->x1,
tool->y1,
tool->x2 - tool->x1,
tool->y2 - tool->y1);
ddisplay_flush (ddisp);
break;
case STATE_NONE:
break;
default:
message_error("Internal error: Strange state in modify_tool\n");
}
tool->last_to = to;
tool->auto_scrolled = auto_scroll;
}
static void
grid_draw_hex(DDisplay *ddisp, Rectangle *update, real length)
{
real horiz_pos, vert_pos;
int to_x, to_y, x, y;
DiaRenderer *renderer = ddisp->renderer;
DiaInteractiveRendererInterface *irenderer;
irenderer = DIA_GET_INTERACTIVE_RENDERER_INTERFACE (renderer);
/* First horizontal lines: */
vert_pos = ceil( update->top / (length * sqrt(3)) ) * length * sqrt(3);
while (vert_pos <= update->bottom) {
horiz_pos = ceil( (update->left) / (3 * length) ) * length * 3 - length * 2.5;
while (horiz_pos <= update->right) {
ddisplay_transform_coords(ddisp, horiz_pos, vert_pos, &x, &y);
ddisplay_transform_coords(ddisp, horiz_pos + length, vert_pos, &to_x, &y);
irenderer->draw_pixel_line(renderer,
x, y, to_x, y,
&ddisp->diagram->grid.colour);
horiz_pos += 3 * length;
}
vert_pos += sqrt(3) * length;
}
/* Second horizontal lines: */
vert_pos = ceil( update->top / (length * sqrt(3)) ) * length * sqrt(3) - 0.5 * sqrt(3) * length;
while (vert_pos <= update->bottom) {
horiz_pos = ceil( (update->left) / (3 * length) ) * length * 3 - length;
while (horiz_pos <= update->right) {
ddisplay_transform_coords(ddisp, horiz_pos, vert_pos, &x, &y);
ddisplay_transform_coords(ddisp, horiz_pos+length, vert_pos, &to_x, &y);
irenderer->draw_pixel_line(renderer,
x, y, to_x, y,
&ddisp->diagram->grid.colour);
horiz_pos += 3 * length;
}
vert_pos += sqrt(3) * length;
}
/* First \'s and /'s */
vert_pos = ceil( update->top / (length * sqrt(3)) ) * length * sqrt(3) - length * sqrt(3);
while (vert_pos <= update->bottom) {
horiz_pos = ceil( (update->left) / (3 * length) ) * length * 3 - length * 2.5;
while (horiz_pos <= update->right) {
ddisplay_transform_coords(ddisp, horiz_pos + length, vert_pos, &x, &y);
ddisplay_transform_coords(ddisp, horiz_pos + 1.5 * length, vert_pos + length * sqrt(3) * 0.5, &to_x, &to_y);
irenderer->draw_pixel_line(renderer,
x, y, to_x, to_y,
&ddisp->diagram->grid.colour);
ddisplay_transform_coords(ddisp, horiz_pos, vert_pos, &x, &y);
ddisplay_transform_coords(ddisp, horiz_pos - 0.5 * length, vert_pos + length * sqrt(3) * 0.5, &to_x, &to_y);
irenderer->draw_pixel_line(renderer,
x, y, to_x, to_y,
&ddisp->diagram->grid.colour);
horiz_pos += 3 * length;
}
vert_pos += sqrt(3) * length;
}
/* Second \'s and /'s */
vert_pos = ceil( update->top / (length * sqrt(3)) ) * length * sqrt(3) - 0.5 * sqrt(3) * length;
while (vert_pos <= update->bottom) {
horiz_pos = ceil( (update->left) / (3 * length) ) * length * 3 - length;
while (horiz_pos <= update->right) {
ddisplay_transform_coords(ddisp, horiz_pos, vert_pos, &x, &y);
ddisplay_transform_coords(ddisp, horiz_pos - 0.5 * length, vert_pos + 0.5 * sqrt(3) * length, &to_x, &to_y);
irenderer->draw_pixel_line(renderer,
x, y, to_x, to_y,
&ddisp->diagram->grid.colour);
ddisplay_transform_coords(ddisp, horiz_pos + length, vert_pos, &x, &y);
ddisplay_transform_coords(ddisp, horiz_pos + 1.5 * length, vert_pos + 0.5 * sqrt(3) * length, &to_x, &to_y);
irenderer->draw_pixel_line(renderer,
x, y, to_x, to_y,
&ddisp->diagram->grid.colour);
horiz_pos += 3 * length;
}
vert_pos += sqrt(3) * length;
}
}
void
ddisplay_render_pixmap(DDisplay *ddisp, Rectangle *update)
{
GList *list;
DiaObject *obj;
int i;
DiaInteractiveRendererInterface *renderer;
#ifdef TRACES
GTimer *timer;
#endif
if (ddisp->renderer==NULL) {
printf("ERROR! Renderer was NULL!!\n");
return;
}
renderer = DIA_GET_INTERACTIVE_RENDERER_INTERFACE (ddisp->renderer);
/* Erase background */
g_return_if_fail (renderer->fill_pixel_rect != NULL);
DIA_RENDERER_GET_CLASS(ddisp->renderer)->begin_render(ddisp->renderer, update);
if (update) {
int x0, y0, x1, y1;
ddisplay_transform_coords (ddisp, update->left, update->top, &x0, &y0);
ddisplay_transform_coords (ddisp, update->right, update->bottom, &x1, &y1);
renderer->fill_pixel_rect (ddisp->renderer,
x0, y0, x1-x0, y1-y0,
&ddisp->diagram->data->bg_color);
} else
renderer->fill_pixel_rect (ddisp->renderer,
0, 0,
dia_renderer_get_width_pixels (ddisp->renderer),
dia_renderer_get_height_pixels (ddisp->renderer),
&ddisp->diagram->data->bg_color);
/* Draw grid */
grid_draw(ddisp, update);
pagebreak_draw(ddisp, update);
#ifdef TRACES
timer = g_timer_new();
#endif
data_render(ddisp->diagram->data, ddisp->renderer, update,
ddisplay_obj_render, (gpointer) ddisp);
#ifdef TRACES
g_print ("data_render(%g%%) took %g seconds\n", ddisp->zoom_factor * 5.0, g_timer_elapsed (timer, NULL));
g_timer_destroy (timer);
#endif
/* Draw handles for all selected objects */
list = ddisp->diagram->data->selected;
while (list!=NULL) {
obj = (DiaObject *) list->data;
for (i=0;i<obj->num_handles;i++) {
handle_draw(obj->handles[i], ddisp);
}
list = g_list_next(list);
}
DIA_RENDERER_GET_CLASS(ddisp->renderer)->end_render(ddisp->renderer);
}