static void
ghid_draw_grid (void)
{
static GdkPoint *points = 0;
static int npoints = 0;
int x1, y1, x2, y2, n, i;
double x, y;
if (!Settings.DrawGrid)
return;
if (Vz (PCB->Grid) < MIN_GRID_DISTANCE)
return;
if (!gport->grid_gc)
{
if (gdk_color_parse (Settings.GridColor, &gport->grid_color))
{
gport->grid_color.red ^= gport->bg_color.red;
gport->grid_color.green ^= gport->bg_color.green;
gport->grid_color.blue ^= gport->bg_color.blue;
gdk_color_alloc (gport->colormap, &gport->grid_color);
}
gport->grid_gc = gdk_gc_new (gport->drawable);
gdk_gc_set_function (gport->grid_gc, GDK_XOR);
gdk_gc_set_foreground (gport->grid_gc, &gport->grid_color);
}
x1 = GRIDFIT_X (SIDE_X (gport->view_x0), PCB->Grid);
y1 = GRIDFIT_Y (SIDE_Y (gport->view_y0), PCB->Grid);
x2 = GRIDFIT_X (SIDE_X (gport->view_x0 + gport->view_width - 1), PCB->Grid);
y2 =
GRIDFIT_Y (SIDE_Y (gport->view_y0 + gport->view_height - 1), PCB->Grid);
if (x1 > x2)
{
int tmp = x1;
x1 = x2;
x2 = tmp;
}
if (y1 > y2)
{
int tmp = y1;
y1 = y2;
y2 = tmp;
}
if (Vx (x1) < 0)
x1 += PCB->Grid;
if (Vy (y1) < 0)
y1 += PCB->Grid;
if (Vx (x2) >= gport->width)
x2 -= PCB->Grid;
if (Vy (y2) >= gport->height)
y2 -= PCB->Grid;
n = (int) ((x2 - x1) / PCB->Grid + 0.5) + 1;
if (n > npoints)
{
npoints = n + 10;
points = (GdkPoint *)realloc (points, npoints * sizeof (GdkPoint));
}
n = 0;
for (x = x1; x <= x2; x += PCB->Grid)
{
points[n].x = Vx (x);
n++;
}
if (n == 0)
return;
for (y = y1; y <= y2; y += PCB->Grid)
{
int vy = Vy (y);
for (i = 0; i < n; i++)
points[i].y = vy;
gdk_draw_points (gport->drawable, gport->grid_gc, points, n);
}
}
/* ---------------------------------------------------------------------------
* recalculates the passed coordinates to fit the current grid setting
*/
void
FitCrosshairIntoGrid (LocationType X, LocationType Y)
{
LocationType x2, y2, x0, y0;
void *ptr1, *ptr2, *ptr3;
float nearest, sq_dist;
int ans;
x0 = 0;
y0 = 0;
x2 = PCB->MaxWidth;
y2 = PCB->MaxHeight;
Crosshair.X = MIN (Crosshair.MaxX, MAX (Crosshair.MinX, X));
Crosshair.Y = MIN (Crosshair.MaxY, MAX (Crosshair.MinY, Y));
if (PCB->RatDraw)
{
x0 = -600;
y0 = -600;
}
else
{
/* check if new position is inside the output window
* This might not be true after the window has been resized.
* In this case we just set it to the center of the window or
* with respect to the grid (if possible)
*/
if (Crosshair.X < x0 || Crosshair.X > x2)
{
if (x2 + 1 >= PCB->Grid)
/* there must be a point that matches the grid
* so we just have to look for it with some integer
* calculations
*/
x0 = GRIDFIT_X (PCB->Grid, PCB->Grid);
else
x0 = (x2) / 2;
}
else
/* check if the new position matches the grid */
x0 = GRIDFIT_X (Crosshair.X, PCB->Grid);
/* do the same for the second coordinate */
if (Crosshair.Y < y0 || Crosshair.Y > y2)
{
if (y2 + 1 >= PCB->Grid)
y0 = GRIDFIT_Y (PCB->Grid, PCB->Grid);
else
y0 = (y2) / 2;
}
else
y0 = GRIDFIT_Y (Crosshair.Y, PCB->Grid);
if (Marked.status && TEST_FLAG (ORTHOMOVEFLAG, PCB))
{
int dx = Crosshair.X - Marked.X;
int dy = Crosshair.Y - Marked.Y;
if (ABS (dx) > ABS (dy))
y0 = Marked.Y;
else
x0 = Marked.X;
}
}
nearest = -1;
if (PCB->RatDraw || TEST_FLAG (SNAPPINFLAG, PCB))
ans = SearchScreenGridSlop (Crosshair.X, Crosshair.Y,
PAD_TYPE, &ptr1, &ptr2, &ptr3);
else
ans = NO_TYPE;
/* Avoid self-snapping when moving */
if (ans && Settings.Mode == MOVE_MODE &&
Crosshair.AttachedObject.Type == ELEMENT_TYPE &&
ptr1 == Crosshair.AttachedObject.Ptr1)
ans = NO_TYPE;
if (ans && (Settings.Mode == LINE_MODE ||
(Settings.Mode == MOVE_MODE &&
Crosshair.AttachedObject.Type == LINEPOINT_TYPE)))
{
PadTypePtr pad = (PadTypePtr) ptr2;
LayerType *desired_layer;
Cardinal desired_group;
Cardinal SLayer, CLayer;
int found_our_layer = false;
desired_layer = CURRENT;
if (Settings.Mode == MOVE_MODE &&
Crosshair.AttachedObject.Type == LINEPOINT_TYPE)
{
desired_layer = (LayerType *)Crosshair.AttachedObject.Ptr1;
}
/* find layer groups of the component side and solder side */
SLayer = GetLayerGroupNumberByNumber (solder_silk_layer);
CLayer = GetLayerGroupNumberByNumber (component_silk_layer);
desired_group = TEST_FLAG (ONSOLDERFLAG, pad) ? SLayer : CLayer;
GROUP_LOOP (PCB->Data, desired_group);
{
if (layer == desired_layer)
{
found_our_layer = true;
break;
}
}
END_LOOP;
if (found_our_layer == false)
ans = NO_TYPE;
}
if (ans)
{
PadTypePtr pad = (PadTypePtr) ptr2;
LocationType px, py;
px = (pad->Point1.X + pad->Point2.X) / 2;
py = (pad->Point1.Y + pad->Point2.Y) / 2;
sq_dist = SQUARE (px - Crosshair.X) + SQUARE (py - Crosshair.Y);
if (!gui->shift_is_pressed() ||
SQUARE (x0 - Crosshair.X) + SQUARE (y0 - Crosshair.Y) > sq_dist)
{
x0 = px;
y0 = py;
nearest = sq_dist;
}
}
if (PCB->RatDraw || TEST_FLAG (SNAPPINFLAG, PCB))
ans = SearchScreenGridSlop (Crosshair.X, Crosshair.Y,
PIN_TYPE, &ptr1, &ptr2, &ptr3);
else
ans = NO_TYPE;
/* Avoid self-snapping when moving */
if (ans && Settings.Mode == MOVE_MODE &&
Crosshair.AttachedObject.Type == ELEMENT_TYPE &&
ptr1 == Crosshair.AttachedObject.Ptr1)
ans = NO_TYPE;
if (ans)
{
PinTypePtr pin = (PinTypePtr) ptr2;
sq_dist = SQUARE (pin->X - Crosshair.X) + SQUARE (pin->Y - Crosshair.Y);
if ((nearest == -1 || sq_dist < nearest) &&
(!gui->shift_is_pressed() ||
SQUARE (x0 - Crosshair.X) + SQUARE (y0 - Crosshair.Y) > sq_dist))
{
x0 = pin->X;
y0 = pin->Y;
nearest = sq_dist;
}
}
if (TEST_FLAG (SNAPPINFLAG, PCB))
ans = SearchScreenGridSlop (Crosshair.X, Crosshair.Y,
VIA_TYPE, &ptr1, &ptr2, &ptr3);
else
ans = NO_TYPE;
/* Avoid snapping vias to any other vias */
if (Settings.Mode == MOVE_MODE &&
Crosshair.AttachedObject.Type == VIA_TYPE)
{
if (ans & PIN_TYPES)
ans = NO_TYPE;
}
if (ans)
{
PinTypePtr pin = (PinTypePtr) ptr2;
sq_dist = SQUARE (pin->X - Crosshair.X) + SQUARE (pin->Y - Crosshair.Y);
if ((nearest == -1 || sq_dist < nearest) &&
(!gui->shift_is_pressed() ||
SQUARE (x0 - Crosshair.X) + SQUARE (y0 - Crosshair.Y) > sq_dist))
{
x0 = pin->X;
y0 = pin->Y;
nearest = sq_dist;
}
}
if (TEST_FLAG (SNAPPINFLAG, PCB))
ans = SearchScreenGridSlop (Crosshair.X, Crosshair.Y,
LINEPOINT_TYPE, &ptr1, &ptr2, &ptr3);
else
ans = NO_TYPE;
if (ans)
{
PointTypePtr pnt = (PointTypePtr) ptr3;
sq_dist = SQUARE (pnt->X - Crosshair.X) + SQUARE (pnt->Y - Crosshair.Y);
if ((nearest == -1 || sq_dist < nearest) &&
(!gui->shift_is_pressed() ||
SQUARE (x0 - Crosshair.X) + SQUARE (y0 - Crosshair.Y) > sq_dist))
{
x0 = pnt->X;
y0 = pnt->Y;
nearest = sq_dist;
}
}
if (TEST_FLAG (SNAPPINFLAG, PCB))
ans = SearchScreenGridSlop (Crosshair.X, Crosshair.Y,
POLYGONPOINT_TYPE, &ptr1, &ptr2, &ptr3);
else
ans = NO_TYPE;
if (ans)
{
PointTypePtr pnt = (PointTypePtr) ptr3;
sq_dist = SQUARE (pnt->X - Crosshair.X) + SQUARE (pnt->Y - Crosshair.Y);
if ((nearest == -1 || sq_dist < nearest) &&
(!gui->shift_is_pressed() ||
SQUARE (x0 - Crosshair.X) + SQUARE (y0 - Crosshair.Y) > sq_dist))
{
x0 = pnt->X;
y0 = pnt->Y;
nearest = sq_dist;
}
}
if (PCB->RatDraw || TEST_FLAG (SNAPPINFLAG, PCB))
ans = SearchScreenGridSlop (Crosshair.X, Crosshair.Y,
ELEMENT_TYPE, &ptr1, &ptr2, &ptr3);
else
ans = NO_TYPE;
if (ans & ELEMENT_TYPE)
{
ElementTypePtr el = (ElementTypePtr) ptr1;
sq_dist = SQUARE (el->MarkX - Crosshair.X) + SQUARE (el->MarkY - Crosshair.Y);
if ((nearest == -1 || sq_dist < nearest) &&
SQUARE (x0 - Crosshair.X) + SQUARE (y0 - Crosshair.Y) > sq_dist)
{
x0 = el->MarkX;
y0 = el->MarkY;
nearest = sq_dist;
}
}
if (x0 >= 0 && y0 >= 0)
{
Crosshair.X = x0;
Crosshair.Y = y0;
}
if (Settings.Mode == ARROW_MODE)
{
ans = SearchScreenGridSlop (Crosshair.X, Crosshair.Y,
LINEPOINT_TYPE, &ptr1, &ptr2, &ptr3);
if (ans == NO_TYPE)
hid_action("PointCursor");
else if (!TEST_FLAG(SELECTEDFLAG, (LineType *)ptr2))
hid_actionl("PointCursor","True", NULL);
}
if (Settings.Mode == LINE_MODE
&& Crosshair.AttachedLine.State != STATE_FIRST
&& TEST_FLAG (AUTODRCFLAG, PCB))
EnforceLineDRC ();
gui->set_crosshair (Crosshair.X, Crosshair.Y, HID_SC_DO_NOTHING);
}
/* ---------------------------------------------------------------------------
* recalculates the passed coordinates to fit the current grid setting
*/
void
FitCrosshairIntoGrid (LocationType X, LocationType Y)
{
LocationType x2, y2, x0, y0;
void *ptr1, *ptr2, *ptr3;
int ans;
x0 = 0;
y0 = 0;
x2 = PCB->MaxWidth;
y2 = PCB->MaxHeight;
Crosshair.X = MIN (Crosshair.MaxX, MAX (Crosshair.MinX, X));
Crosshair.Y = MIN (Crosshair.MaxY, MAX (Crosshair.MinY, Y));
if (PCB->RatDraw || TEST_FLAG (SNAPPINFLAG, PCB))
{
ans =
SearchScreen (Crosshair.X, Crosshair.Y,
PAD_TYPE | PIN_TYPE, &ptr1, &ptr2, &ptr3);
if (ans == NO_TYPE && !PCB->RatDraw)
ans =
SearchScreen (Crosshair.X, Crosshair.Y, VIA_TYPE | LINEPOINT_TYPE,
&ptr1, &ptr2, &ptr3);
if (ans == NO_TYPE && !PCB->RatDraw)
ans =
SearchScreen (Crosshair.X, Crosshair.Y, ELEMENT_TYPE, &ptr1, &ptr2,
&ptr3);
}
else
ans = NO_TYPE;
/* avoid self-snapping */
if (Settings.Mode == MOVE_MODE)
{
switch (Crosshair.AttachedObject.Type)
{
case ELEMENT_TYPE:
if ((ans & (PAD_TYPE | PIN_TYPE)) &&
ptr1 == Crosshair.AttachedObject.Ptr1)
ans = NO_TYPE;
break;
case VIA_TYPE:
/* just avoid snapping to any other vias */
if (ans & PIN_TYPES)
ans = NO_TYPE;
break;
}
}
if (PCB->RatDraw)
{
x0 = -600;
y0 = -600;
}
else
{
/* check if new position is inside the output window
* This might not be true after the window has been resized.
* In this case we just set it to the center of the window or
* with respect to the grid (if possible)
*/
if (Crosshair.X < x0 || Crosshair.X > x2)
{
if (x2 + 1 >= PCB->Grid)
/* there must be a point that matches the grid
* so we just have to look for it with some integer
* calculations
*/
x0 = GRIDFIT_X (PCB->Grid, PCB->Grid);
else
x0 = (x2) / 2;
}
else
/* check if the new position matches the grid */
x0 = GRIDFIT_X (Crosshair.X, PCB->Grid);
/* do the same for the second coordinate */
if (Crosshair.Y < y0 || Crosshair.Y > y2)
{
if (y2 + 1 >= PCB->Grid)
y0 = GRIDFIT_Y (PCB->Grid, PCB->Grid);
else
y0 = (y2) / 2;
}
else
y0 = GRIDFIT_Y (Crosshair.Y, PCB->Grid);
if (Marked.status && TEST_FLAG (ORTHOMOVEFLAG, PCB))
{
int dx = Crosshair.X - Marked.X;
int dy = Crosshair.Y - Marked.Y;
if (ABS (dx) > ABS (dy))
y0 = Marked.Y;
else
x0 = Marked.X;
}
}
if (ans & PAD_TYPE)
{
PadTypePtr pad = (PadTypePtr) ptr2;
LocationType px, py;
px = (pad->Point1.X + pad->Point2.X) / 2;
py = (pad->Point1.Y + pad->Point2.Y) / 2;
if (!gui->shift_is_pressed()
|| (SQUARE (x0 - Crosshair.X) + SQUARE (y0 - Crosshair.Y) >
SQUARE (px - Crosshair.X) + SQUARE (py - Crosshair.Y)))
{
x0 = px;
y0 = py;
}
}
else if (ans & (PIN_TYPE | VIA_TYPE))
{
PinTypePtr pin = (PinTypePtr) ptr2;
if (!gui->shift_is_pressed()
|| (SQUARE (x0 - Crosshair.X) +
SQUARE (y0 - Crosshair.Y) >
SQUARE (pin->X - Crosshair.X) + SQUARE (pin->Y - Crosshair.Y)))
{
x0 = pin->X;
y0 = pin->Y;
}
}
else if (ans & LINEPOINT_TYPE)
{
PointTypePtr pnt = (PointTypePtr) ptr3;
if (((x0 - Crosshair.X) * (x0 - Crosshair.X) +
(y0 - Crosshair.Y) * (y0 - Crosshair.Y)) >
((pnt->X - Crosshair.X) * (pnt->X - Crosshair.X) +
(pnt->Y - Crosshair.Y) * (pnt->Y - Crosshair.Y)))
{
x0 = pnt->X;
y0 = pnt->Y;
}
}
else if (ans & ELEMENT_TYPE)
{
ElementTypePtr el = (ElementTypePtr) ptr1;
if (SQUARE (x0 - Crosshair.X) + SQUARE (y0 - Crosshair.Y) >
SQUARE (el->MarkX - Crosshair.X) + SQUARE (el->MarkY - Crosshair.Y))
{
x0 = el->MarkX;
y0 = el->MarkY;
}
}
if (x0 >= 0 && y0 >= 0)
{
Crosshair.X = x0;
Crosshair.Y = y0;
}
if (Settings.Mode == ARROW_MODE)
{
ans =
SearchScreen (Crosshair.X, Crosshair.Y, LINEPOINT_TYPE,
&ptr1, &ptr2, &ptr3);
if (ans == NO_TYPE)
hid_action("PointCursor");
else if (!TEST_FLAG(SELECTEDFLAG, (LineType *)ptr2))
hid_actionl("PointCursor","True", NULL);
}
if (Settings.Mode == LINE_MODE
&& Crosshair.AttachedLine.State != STATE_FIRST
&& TEST_FLAG (AUTODRCFLAG, PCB))
EnforceLineDRC ();
gui->set_crosshair (Crosshair.X, Crosshair.Y, HID_SC_DO_NOTHING);
}
