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translate by 0.5,0.5 instead of adding 0.5 to all coordinates (we always

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2007-11-05  Michael Natterer  <mitch@gimp.org>

	* app/widgets/gimpcurveview.c (gimp_curve_view_expose): translate
	by 0.5,0.5 instead of adding 0.5 to all coordinates (we always
	want to draw on pixel centers here). Some cleanup.


svn path=/trunk/; revision=24072
This commit is contained in:
Michael Natterer
2007-11-05 21:41:01 +00:00
committed by Michael Natterer
parent bd1db1a1c8
commit 36e1fa8d29
2 changed files with 48 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
ChangeLog
View File

@ -1,3 +1,9 @@
2007-11-05 Michael Natterer <mitch@gimp.org>
* app/widgets/gimpcurveview.c (gimp_curve_view_expose): translate
by 0.5,0.5 instead of adding 0.5 to all coordinates (we always
want to draw on pixel centers here). Some cleanup.
2007-11-05 Martin Nordholts <martinn@svn.gnome.org>
* app/tools/gimprectangletool.c (gimp_rectangle_tool_motion): Bail

84
app/widgets/gimpcurveview.c
View File

@ -131,7 +131,8 @@ static gboolean
gimp_curve_view_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GimpCurveView *view = GIMP_CURVE_VIEW (widget);
GimpCurveView *view = GIMP_CURVE_VIEW (widget);
GtkStyle *style = widget->style;
cairo_t *cr;
gint border;
gint width, height;
@ -152,39 +153,40 @@ gimp_curve_view_expose (GtkWidget *widget,
gdk_cairo_region (cr, event->region);
cairo_clip (cr);
cairo_translate (cr, 0.5, 0.5);
cairo_set_line_width (cr, 1);
gdk_cairo_set_source_color (cr, &widget->style->dark[GTK_STATE_NORMAL]);
gdk_cairo_set_source_color (cr, &style->dark[GTK_STATE_NORMAL]);
/* Draw the grid lines */
for (i = 1; i < 4; i++)
{
cairo_move_to (cr,
border + 0.5,
border + 0.5 + i * (height / 4));
border,
border + i * (height / 4));
cairo_line_to (cr,
border + 0.5 + width - 1,
border + 0.5 + i * (height / 4));
border + width - 1,
border + i * (height / 4));
cairo_move_to (cr,
border + 0.5 + i * (width / 4),
border + 0.5);
border + i * (width / 4),
border);
cairo_line_to (cr,
border + 0.5 + i * (width / 4),
border + 0.5 + height - 1);
border + i * (width / 4),
border + height - 1);
}
cairo_stroke (cr);
/* Draw the curve */
gdk_cairo_set_source_color (cr, &widget->style->text[GTK_STATE_NORMAL]);
gdk_cairo_set_source_color (cr, &style->text[GTK_STATE_NORMAL]);
x = 0;
y = 255 - view->curve->curve[x];
cairo_move_to (cr,
border + 0.5 + (gdouble) width * x / 256.0,
border + 0.5 + (gdouble) height * y / 256.0);
border + (gdouble) width * x / 256.0,
border + (gdouble) height * y / 256.0);
for (i = 0; i < 256; i++)
{
@ -192,8 +194,8 @@ gimp_curve_view_expose (GtkWidget *widget,
y = 255 - view->curve->curve[x];
cairo_line_to (cr,
border + 0.5 + (gdouble) width * x / 256.0,
border + 0.5 + (gdouble) height * y / 256.0);
border + (gdouble) width * x / 256.0,
border + (gdouble) height * y / 256.0);
}
cairo_stroke (cr);
@ -210,11 +212,11 @@ gimp_curve_view_expose (GtkWidget *widget,
y = 255 - view->curve->points[i][1];
cairo_move_to (cr,
border + 0.5 + (gdouble) width * x / 256.0,
border + 0.5 + (gdouble) height * y / 256.0);
border + (gdouble) width * x / 256.0,
border + (gdouble) height * y / 256.0);
cairo_arc (cr,
border + 0.5 + (gdouble) width * x / 256.0,
border + 0.5 + (gdouble) height * y / 256.0,
border + (gdouble) width * x / 256.0,
border + (gdouble) height * y / 256.0,
border,
0, 2 * G_PI);
@ -222,17 +224,17 @@ gimp_curve_view_expose (GtkWidget *widget,
{
cairo_fill (cr);
gdk_cairo_set_source_color (cr, &widget->style->base[GTK_STATE_NORMAL]);
gdk_cairo_set_source_color (cr, &style->base[GTK_STATE_NORMAL]);
cairo_arc (cr,
border + 0.5 + (gdouble) width * x / 256.0,
border + 0.5 + (gdouble) height * y / 256.0,
border + (gdouble) width * x / 256.0,
border + (gdouble) height * y / 256.0,
border - 2,
0, 2 * G_PI);
cairo_fill (cr);
gdk_cairo_set_source_color (cr, &widget->style->text[GTK_STATE_NORMAL]);
gdk_cairo_set_source_color (cr, &style->text[GTK_STATE_NORMAL]);
}
}
@ -243,17 +245,15 @@ gimp_curve_view_expose (GtkWidget *widget,
{
gchar buf[32];
gdk_cairo_set_source_color (cr, &widget->style->text[GTK_STATE_NORMAL]);
gdk_cairo_set_source_color (cr, &style->text[GTK_STATE_NORMAL]);
/* draw the color line */
cairo_move_to (cr,
border + 0.5 +
ROUND ((gdouble) width * view->xpos / 256.0),
border + 0.5);
border + ROUND ((gdouble) width * view->xpos / 256.0),
border);
cairo_line_to (cr,
border + 0.5 +
ROUND ((gdouble) width * view->xpos / 256.0),
border + 0.5 + height - 1);
border + ROUND ((gdouble) width * view->xpos / 256.0),
border + height - 1);
cairo_stroke (cr);
/* and xpos indicator */
@ -266,14 +266,14 @@ gimp_curve_view_expose (GtkWidget *widget,
pango_layout_get_pixel_size (view->xpos_layout, &x, &y);
if ((view->xpos + border) < 127)
x = border + 4;
if (view->xpos < 127)
x = border;
else
x = -(x + 2);
x = -(x + border);
cairo_move_to (cr,
border + 0.5 + (gdouble) width * view->xpos / 256.0 + x,
border + 0.5 + height - y - 2);
border + (gdouble) width * view->xpos / 256.0 + x,
border + height - border - y);
pango_cairo_show_layout (cr, view->xpos_layout);
cairo_fill (cr);
}
@ -293,24 +293,24 @@ gimp_curve_view_expose (GtkWidget *widget,
NULL, &view->cursor_rect);
}
x = border * 2 + 2;
y = border * 2 + 2;
x = border * 2;
y = border * 2;
w = view->cursor_rect.width + 4;
h = view->cursor_rect.height + 4;
gdk_cairo_set_source_color (cr, &widget->style->base[GTK_STATE_NORMAL]);
cairo_rectangle (cr, x + 0.5, y + 0.5, w + 1, h + 1);
gdk_cairo_set_source_color (cr, &style->base[GTK_STATE_NORMAL]);
cairo_rectangle (cr, x, y, w + 1, h + 1);
cairo_fill (cr);
gdk_cairo_set_source_color (cr, &widget->style->text[GTK_STATE_NORMAL]);
cairo_rectangle (cr, x + 0.5, y + 0.5, w + 1, h + 1);
gdk_cairo_set_source_color (cr, &style->text[GTK_STATE_NORMAL]);
cairo_rectangle (cr, x, y, w + 1, h + 1);
cairo_stroke (cr);
g_snprintf (buf, sizeof (buf), "x:%3d y:%3d",
view->cursor_x, 255 - view->cursor_y);
pango_layout_set_text (view->cursor_layout, buf, -1);
cairo_move_to (cr, x + 2 + 0.5, y + 2 + 0.5);
cairo_move_to (cr, x + 2, y + 2);
pango_cairo_show_layout (cr, view->cursor_layout);
cairo_fill (cr);
}