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transformtool: flip cursor if needed

This commit is contained in:
Mikael Magnusson 2012-08-28 11:10:30 +02:00
parent a6862af834
commit a2e8da357e
1 changed files with 81 additions and 9 deletions
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90
app/tools/gimpunifiedtransformtool.c
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@ -446,6 +446,8 @@ gimp_unified_transform_tool_cursor_update (GimpTransformTool *tr_tool,
gdouble angle[8];
gint i;
GimpCursorType map[8];
GimpVector2 pos[4], this, that;
gboolean flip = FALSE, side = FALSE, setcursor = TRUE;
map[0] = GIMP_CURSOR_CORNER_TOP_LEFT;
map[1] = GIMP_CURSOR_CORNER_TOP;
@ -456,7 +458,7 @@ gimp_unified_transform_tool_cursor_update (GimpTransformTool *tr_tool,
map[6] = GIMP_CURSOR_CORNER_BOTTOM_LEFT;
map[7] = GIMP_CURSOR_CORNER_LEFT;
gethandlegeometry (tr_tool, NULL, angle);
gethandlegeometry (tr_tool, pos, angle);
for (i = 0; i < 8; i++)
angle[i] = round(angle[i] * 180. / G_PI / 45.);
@ -465,48 +467,118 @@ gimp_unified_transform_tool_cursor_update (GimpTransformTool *tr_tool,
{
case TRANSFORM_HANDLE_NW_P:
case TRANSFORM_HANDLE_NW:
*cursor = map[((int)angle[4] + 0) % 8];
i = (gint)angle[4] + 0;
this = pos[0];
that = pos[3];
break;
case TRANSFORM_HANDLE_NE_P:
case TRANSFORM_HANDLE_NE:
*cursor = map[((int)angle[5] + 2) % 8];
i = (gint)angle[5] + 2;
this = pos[1];
that = pos[2];
break;
case TRANSFORM_HANDLE_SW_P:
case TRANSFORM_HANDLE_SW:
*cursor = map[((int)angle[6] + 6) % 8];
i = (gint)angle[6] + 6;
this = pos[2];
that = pos[1];
break;
case TRANSFORM_HANDLE_SE_P:
case TRANSFORM_HANDLE_SE:
*cursor = map[((int)angle[7] + 4) % 8];
i = (gint)angle[7] + 4;
this = pos[3];
that = pos[0];
break;
case TRANSFORM_HANDLE_N:
case TRANSFORM_HANDLE_N_S:
*cursor = map[((int)angle[0] + 1) % 8] + 8;
i = (gint)angle[0] + 1;
this = vectoradd (pos[0], pos[1]);
that = vectoradd (pos[2], pos[3]);
side = TRUE;
break;
case TRANSFORM_HANDLE_S:
case TRANSFORM_HANDLE_S_S:
*cursor = map[((int)angle[1] + 5) % 8] + 8;
i = (gint)angle[1] + 5;
this = vectoradd (pos[2], pos[3]);
that = vectoradd (pos[0], pos[1]);
side = TRUE;
break;
case TRANSFORM_HANDLE_E:
case TRANSFORM_HANDLE_E_S:
*cursor = map[((int)angle[2] + 3) % 8] + 8;
i = (gint)angle[2] + 3;
this = vectoradd (pos[1], pos[3]);
that = vectoradd (pos[0], pos[2]);
side = TRUE;
break;
case TRANSFORM_HANDLE_W:
case TRANSFORM_HANDLE_W_S:
*cursor = map[((int)angle[3] + 7) % 8] + 8;
i = (gint)angle[3] + 7;
this = vectoradd (pos[0], pos[2]);
that = vectoradd (pos[1], pos[3]);
side = TRUE;
break;
default:
setcursor = FALSE;
break;
}
if (setcursor)
{
i %= 8;
switch (map[i])
{
case GIMP_CURSOR_CORNER_TOP_LEFT:
if (this.x + this.y > that.x + that.y)
flip = TRUE;
break;
case GIMP_CURSOR_CORNER_TOP:
if (this.y > that.y)
flip = TRUE;
break;
case GIMP_CURSOR_CORNER_TOP_RIGHT:
if (this.x - this.y < that.x - that.y)
flip = TRUE;
break;
case GIMP_CURSOR_CORNER_RIGHT:
if (this.x < that.x)
flip = TRUE;
break;
case GIMP_CURSOR_CORNER_BOTTOM_RIGHT:
if (this.x + this.y < that.x + that.y)
flip = TRUE;
break;
case GIMP_CURSOR_CORNER_BOTTOM:
if (this.y < that.y)
flip = TRUE;
break;
case GIMP_CURSOR_CORNER_BOTTOM_LEFT:
if (this.x - this.y > that.x - that.y)
flip = TRUE;
break;
case GIMP_CURSOR_CORNER_LEFT:
if (this.x > that.x)
flip = TRUE;
break;
default:
g_assert_not_reached ();
}
if (flip)
*cursor = map[(i + 4) % 8];
else
*cursor = map[i];
if (side)
*cursor += 8;
}
/* parent class handles *cursor and *modifier for most handles */
switch (tr_tool->function)
{