Initial import of renamed Unico engine, ready for hacking!

1 files changed, 421 insertions, 0 deletions

diff --git a/tdegtk/gtkroundedbox.c b/tdegtk/gtkroundedbox.c
new file mode 100644
index 0000000..7c5740f
--- /dev/null
+++ b/tdegtk/gtkroundedbox.c
@@ -0,0 +1,421 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2011 Benjamin Otte <otte@gnome.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <string.h>
+#include <cairo.h>
+
+#include "gtkroundedboxprivate.h"
+
+/**
+ * _gtk_rounded_box_init_rect:
+ * @box: box to initialize
+ * @x: x coordinate of box
+ * @y: y coordinate of box
+ * @width: width of box
+ * @height: height of box
+ *
+ * Initializes the given @box to represent the given rectangle.
+ **/
+void
+_gtk_rounded_box_init_rect (GtkRoundedBox *box,
+                            gdouble        x,
+                            gdouble        y,
+                            gdouble        width,
+                            gdouble        height)
+{
+  box->box.x = x;
+  box->box.y = y;
+  box->box.width = width;
+  box->box.height = height;
+  memset (&box->border_radius, 0, sizeof (GtkCssBorderRadius));
+}
+
+/* clamp border radius, following CSS specs */
+static void
+gtk_rounded_box_clamp_border_radius (GtkRoundedBox *box)
+{
+  gdouble factor = 1.0;
+
+  /* left */
+  if (box->border_radius.top_left.vertical + box->border_radius.bottom_left.vertical > 0 &&
+      box->border_radius.top_left.vertical + box->border_radius.bottom_left.vertical > box->box.height)
+    factor = MIN (factor, box->box.height / (box->border_radius.top_left.vertical +
+                                             box->border_radius.bottom_left.vertical));
+
+  /* top */
+  if (box->border_radius.top_left.horizontal + box->border_radius.top_right.horizontal > 0 &&
+      box->border_radius.top_left.horizontal + box->border_radius.top_right.horizontal > box->box.width)
+    factor = MIN (factor, box->box.width / (box->border_radius.top_left.horizontal +
+                                            box->border_radius.top_right.horizontal));
+
+  /* right */
+  if (box->border_radius.top_right.vertical + box->border_radius.bottom_right.horizontal > 0 &&
+      box->border_radius.top_right.vertical + box->border_radius.bottom_right.horizontal > box->box.height)
+    factor = MIN (factor, box->box.height / (box->border_radius.top_right.vertical +
+                                             box->border_radius.bottom_right.horizontal));
+
+  /* bottom */
+  if (box->border_radius.bottom_right.horizontal + box->border_radius.bottom_left.horizontal > 0 &&
+      box->border_radius.bottom_right.horizontal + box->border_radius.bottom_left.horizontal > box->box.width)
+    factor = MIN (factor, box->box.width / (box->border_radius.bottom_right.horizontal +
+                                            box->border_radius.bottom_left.horizontal));
+
+  /* scale border radius */
+  box->border_radius.top_left.horizontal *= factor;
+  box->border_radius.top_left.vertical *= factor;
+  box->border_radius.top_right.horizontal *= factor;
+  box->border_radius.top_right.vertical *= factor;
+  box->border_radius.bottom_right.horizontal *= factor;
+  box->border_radius.bottom_right.vertical *= factor;
+  box->border_radius.bottom_left.horizontal *= factor;
+  box->border_radius.bottom_left.vertical *= factor;
+}
+
+void
+_gtk_rounded_box_apply_border_radius (GtkRoundedBox    *box,
+                                      GtkThemingEngine *engine,
+                                      GtkStateFlags     state,
+                                      GtkJunctionSides  junction)
+{
+  GtkCssBorderCornerRadius *top_left_radius, *top_right_radius;
+  GtkCssBorderCornerRadius *bottom_left_radius, *bottom_right_radius;
+
+  gtk_theming_engine_get (engine, state,
+                          /* Can't use border-radius as it's an int for
+                           * backwards compat */
+                          "border-top-left-radius", &top_left_radius,
+                          "border-top-right-radius", &top_right_radius,
+                          "border-bottom-right-radius", &bottom_right_radius,
+                          "border-bottom-left-radius", &bottom_left_radius,
+                          NULL);
+
+  if (top_left_radius && (junction & GTK_JUNCTION_CORNER_TOPLEFT) == 0)
+    box->border_radius.top_left = *top_left_radius;
+  if (top_right_radius && (junction & GTK_JUNCTION_CORNER_TOPRIGHT) == 0)
+    box->border_radius.top_right = *top_right_radius;
+  if (bottom_right_radius && (junction & GTK_JUNCTION_CORNER_BOTTOMRIGHT) == 0)
+    box->border_radius.bottom_right = *bottom_right_radius;
+  if (bottom_left_radius && (junction & GTK_JUNCTION_CORNER_BOTTOMLEFT) == 0)
+    box->border_radius.bottom_left = *bottom_left_radius;
+
+  gtk_rounded_box_clamp_border_radius (box);
+
+  g_free (top_left_radius);
+  g_free (top_right_radius);
+  g_free (bottom_right_radius);
+  g_free (bottom_left_radius);
+}
+
+static void
+gtk_css_border_radius_grow (GtkCssBorderCornerRadius *corner,
+                            gdouble                   horizontal,
+                            gdouble                   vertical)
+{
+  corner->horizontal += horizontal;
+  corner->vertical += vertical;
+
+  if (corner->horizontal <= 0 || corner->vertical <= 0)
+    {
+      corner->horizontal = 0;
+      corner->vertical = 0;
+    }
+}
+
+void
+_gtk_rounded_box_grow (GtkRoundedBox *box,
+                       gdouble        top,
+                       gdouble        right,
+                       gdouble        bottom,
+                       gdouble        left)
+{
+  if (box->box.width + left + right < 0)
+    {
+      box->box.x -= left * box->box.width / (left + right);
+      box->box.width = 0;
+    }
+  else
+    {
+      box->box.x -= left;
+      box->box.width += left + right;
+    }
+
+  if (box->box.height + bottom + right < 0)
+    {
+      box->box.y -= top * box->box.height / (top + bottom);
+      box->box.height = 0;
+    }
+  else
+    {
+      box->box.y -= top;
+      box->box.height += top + bottom;
+    }
+
+  gtk_css_border_radius_grow (&box->border_radius.top_left, left, top);
+  gtk_css_border_radius_grow (&box->border_radius.top_right, right, bottom);
+  gtk_css_border_radius_grow (&box->border_radius.bottom_right, right, top);
+  gtk_css_border_radius_grow (&box->border_radius.bottom_left, left, bottom);
+}
+
+void
+_gtk_rounded_box_shrink (GtkRoundedBox *box,
+                         gdouble        top,
+                         gdouble        right,
+                         gdouble        bottom,
+                         gdouble        left)
+{
+  _gtk_rounded_box_grow (box, -top, -right, -bottom, -left);
+}
+
+void
+_gtk_rounded_box_move (GtkRoundedBox *box,
+                       gdouble        dx,
+                       gdouble        dy)
+{
+  box->box.x += dx;
+  box->box.y += dy;
+}
+
+static void
+_cairo_ellipsis (cairo_t *cr,
+                 gdouble  xc,
+                 gdouble  yc,
+                 gdouble  xradius,
+                 gdouble  yradius,
+                 gdouble  angle1,
+                 gdouble  angle2)
+{
+  if (xradius <= 0.0 || yradius <= 0.0)
+    {
+      cairo_line_to (cr, xc, yc);
+      return;
+    }
+
+  cairo_save (cr);
+  cairo_translate (cr, xc, yc);
+  cairo_scale (cr, xradius, yradius);
+  cairo_arc (cr, 0, 0, 1.0, angle1, angle2);
+  cairo_restore (cr);
+}
+
+static void
+_cairo_ellipsis_negative (cairo_t *cr,
+                          gdouble  xc,
+                          gdouble  yc,
+                          gdouble  xradius,
+                          gdouble  yradius,
+                          gdouble  angle1,
+                          gdouble  angle2)
+{
+  if (xradius <= 0.0 || yradius <= 0.0)
+    {
+      cairo_line_to (cr, xc, yc);
+      return;
+    }
+
+  cairo_save (cr);
+  cairo_translate (cr, xc, yc);
+  cairo_scale (cr, xradius, yradius);
+  cairo_arc_negative (cr, 0, 0, 1.0, angle1, angle2);
+  cairo_restore (cr);
+}
+
+void
+_gtk_rounded_box_path (const GtkRoundedBox *box,
+                       cairo_t             *cr)
+{
+  cairo_new_sub_path (cr);
+
+  _cairo_ellipsis (cr,
+                   box->box.x + box->border_radius.top_left.horizontal,
+                   box->box.y + box->border_radius.top_left.vertical,
+                   box->border_radius.top_left.horizontal,
+                   box->border_radius.top_left.vertical,
+                   G_PI, 3 * G_PI / 2);
+  _cairo_ellipsis (cr, 
+                   box->box.x + box->box.width - box->border_radius.top_right.horizontal,
+                   box->box.y + box->border_radius.top_right.vertical,
+                   box->border_radius.top_right.horizontal,
+                   box->border_radius.top_right.vertical,
+                   - G_PI / 2, 0);
+  _cairo_ellipsis (cr,
+                   box->box.x + box->box.width - box->border_radius.bottom_right.horizontal,
+                   box->box.y + box->box.height - box->border_radius.bottom_right.vertical,
+                   box->border_radius.bottom_right.horizontal,
+                   box->border_radius.bottom_right.vertical,
+                   0, G_PI / 2);
+  _cairo_ellipsis (cr,
+                   box->box.x + box->border_radius.bottom_left.horizontal,
+                   box->box.y + box->box.height - box->border_radius.bottom_left.vertical,
+                   box->border_radius.bottom_left.horizontal,
+                   box->border_radius.bottom_left.vertical,
+                   G_PI / 2, G_PI);
+}
+
+void
+_gtk_rounded_box_path_top (const GtkRoundedBox *outer,
+                           const GtkRoundedBox *inner,
+                           cairo_t             *cr)
+{
+  cairo_new_sub_path (cr);
+
+  _cairo_ellipsis (cr,
+                   outer->box.x + outer->border_radius.top_left.horizontal,
+                   outer->box.y + outer->border_radius.top_left.vertical,
+                   outer->border_radius.top_left.horizontal,
+                   outer->border_radius.top_left.vertical,
+                   5 * G_PI / 4, 3 * G_PI / 2);
+  _cairo_ellipsis (cr, 
+                   outer->box.x + outer->box.width - outer->border_radius.top_right.horizontal,
+                   outer->box.y + outer->border_radius.top_right.vertical,
+                   outer->border_radius.top_right.horizontal,
+                   outer->border_radius.top_right.vertical,
+                   - G_PI / 2, -G_PI / 4);
+
+  _cairo_ellipsis_negative (cr, 
+                            inner->box.x + inner->box.width - inner->border_radius.top_right.horizontal,
+                            inner->box.y + inner->border_radius.top_right.vertical,
+                            inner->border_radius.top_right.horizontal,
+                            inner->border_radius.top_right.vertical,
+                            -G_PI / 4, - G_PI / 2);
+  _cairo_ellipsis_negative (cr,
+                            inner->box.x + inner->border_radius.top_left.horizontal,
+                            inner->box.y + inner->border_radius.top_left.vertical,
+                            inner->border_radius.top_left.horizontal,
+                            inner->border_radius.top_left.vertical,
+                            3 * G_PI / 2, 5 * G_PI / 4);
+
+  cairo_close_path (cr);
+}
+
+void
+_gtk_rounded_box_path_right (const GtkRoundedBox *outer,
+                             const GtkRoundedBox *inner,
+                             cairo_t             *cr)
+{
+  cairo_new_sub_path (cr);
+
+  _cairo_ellipsis (cr, 
+                   outer->box.x + outer->box.width - outer->border_radius.top_right.horizontal,
+                   outer->box.y + outer->border_radius.top_right.vertical,
+                   outer->border_radius.top_right.horizontal,
+                   outer->border_radius.top_right.vertical,
+                   - G_PI / 4, 0);
+  _cairo_ellipsis (cr,
+                   outer->box.x + outer->box.width - outer->border_radius.bottom_right.horizontal,
+                   outer->box.y + outer->box.height - outer->border_radius.bottom_right.vertical,
+                   outer->border_radius.bottom_right.horizontal,
+                   outer->border_radius.bottom_right.vertical,
+                   0, G_PI / 4);
+
+  _cairo_ellipsis_negative (cr,
+                            inner->box.x + inner->box.width - inner->border_radius.bottom_right.horizontal,
+                            inner->box.y + inner->box.height - inner->border_radius.bottom_right.vertical,
+                            inner->border_radius.bottom_right.horizontal,
+                            inner->border_radius.bottom_right.vertical,
+                            G_PI / 4, 0);
+  _cairo_ellipsis_negative (cr, 
+                            inner->box.x + inner->box.width - inner->border_radius.top_right.horizontal,
+                            inner->box.y + inner->border_radius.top_right.vertical,
+                            inner->border_radius.top_right.horizontal,
+                            inner->border_radius.top_right.vertical,
+                            0, - G_PI / 4);
+
+  cairo_close_path (cr);
+}
+
+void
+_gtk_rounded_box_path_bottom (const GtkRoundedBox *outer,
+                              const GtkRoundedBox *inner,
+                              cairo_t             *cr)
+{
+  cairo_new_sub_path (cr);
+
+  _cairo_ellipsis (cr,
+                   outer->box.x + outer->box.width - outer->border_radius.bottom_right.horizontal,
+                   outer->box.y + outer->box.height - outer->border_radius.bottom_right.vertical,
+                   outer->border_radius.bottom_right.horizontal,
+                   outer->border_radius.bottom_right.vertical,
+                   G_PI / 4, G_PI / 2);
+  _cairo_ellipsis (cr,
+                   outer->box.x + outer->border_radius.bottom_left.horizontal,
+                   outer->box.y + outer->box.height - outer->border_radius.bottom_left.vertical,
+                   outer->border_radius.bottom_left.horizontal,
+                   outer->border_radius.bottom_left.vertical,
+                   G_PI / 2, 3 * G_PI / 4);
+
+  _cairo_ellipsis_negative (cr,
+                            inner->box.x + inner->border_radius.bottom_left.horizontal,
+                            inner->box.y + inner->box.height - inner->border_radius.bottom_left.vertical,
+                            inner->border_radius.bottom_left.horizontal,
+                            inner->border_radius.bottom_left.vertical,
+                            3 * G_PI / 4, G_PI / 2);
+  _cairo_ellipsis_negative (cr,
+                            inner->box.x + inner->box.width - inner->border_radius.bottom_right.horizontal,
+                            inner->box.y + inner->box.height - inner->border_radius.bottom_right.vertical,
+                            inner->border_radius.bottom_right.horizontal,
+                            inner->border_radius.bottom_right.vertical,
+                            G_PI / 2, G_PI / 4);
+
+  cairo_close_path (cr);
+}
+
+void
+_gtk_rounded_box_path_left (const GtkRoundedBox *outer,
+                            const GtkRoundedBox *inner,
+                            cairo_t             *cr)
+{
+  cairo_new_sub_path (cr);
+
+  _cairo_ellipsis (cr,
+                   outer->box.x + outer->border_radius.bottom_left.horizontal,
+                   outer->box.y + outer->box.height - outer->border_radius.bottom_left.vertical,
+                   outer->border_radius.bottom_left.horizontal,
+                   outer->border_radius.bottom_left.vertical,
+                   3 * G_PI / 4, G_PI);
+  _cairo_ellipsis (cr,
+                   outer->box.x + outer->border_radius.top_left.horizontal,
+                   outer->box.y + outer->border_radius.top_left.vertical,
+                   outer->border_radius.top_left.horizontal,
+                   outer->border_radius.top_left.vertical,
+                   G_PI, 5 * G_PI / 4);
+
+  _cairo_ellipsis_negative (cr,
+                            inner->box.x + inner->border_radius.top_left.horizontal,
+                            inner->box.y + inner->border_radius.top_left.vertical,
+                            inner->border_radius.top_left.horizontal,
+                            inner->border_radius.top_left.vertical,
+                            5 * G_PI / 4, G_PI);
+  _cairo_ellipsis_negative (cr,
+                            inner->box.x + inner->border_radius.bottom_left.horizontal,
+                            inner->box.y + inner->box.height - inner->border_radius.bottom_left.vertical,
+                            inner->border_radius.bottom_left.horizontal,
+                            inner->border_radius.bottom_left.vertical,
+                            G_PI, 3 * G_PI / 4);
+
+  cairo_close_path (cr);
+}
+
+void
+_gtk_rounded_box_clip_path (const GtkRoundedBox *box,
+                            cairo_t             *cr)
+{
+  cairo_rectangle (cr,
+                   box->box.x, box->box.y,
+                   box->box.width, box->box.height);
+}