Merge TextButton and LabelButton border images util structs, etc.

ui/views/controls/button/border_images.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ui/views/controls/button/border_images.h"
+
+#include "base/logging.h"
+#include "grit/ui_resources.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "ui/gfx/canvas.h"
+#include "ui/gfx/rect.h"
+
+#define BORDER_IMAGES(x) x ## _TOP_LEFT,    x ## _TOP,    x ## _TOP_RIGHT, \
+                         x ## _LEFT,        x ## _CENTER, x ## _RIGHT, \
+                         x ## _BOTTOM_LEFT, x ## _BOTTOM, x ## _BOTTOM_RIGHT,
+
+namespace views {
+
+// static
+const int BorderImages::kHot[] = { BORDER_IMAGES(IDR_TEXTBUTTON_HOVER) };
+// static
+const int BorderImages::kPushed[] = { BORDER_IMAGES(IDR_TEXTBUTTON_PRESSED) };
+
+BorderImages::BorderImages() {}
+
+BorderImages::BorderImages(const int image_ids[]) {
+  ResourceBundle& rb = ResourceBundle::GetSharedInstance();
+  top_left = *rb.GetImageSkiaNamed(image_ids[0]);
+  top = *rb.GetImageSkiaNamed(image_ids[1]);
+  top_right = *rb.GetImageSkiaNamed(image_ids[2]);
+  left = *rb.GetImageSkiaNamed(image_ids[3]);
+  center = *rb.GetImageSkiaNamed(image_ids[4]);
+  right = *rb.GetImageSkiaNamed(image_ids[5]);
+  bottom_left = *rb.GetImageSkiaNamed(image_ids[6]);
+  bottom = *rb.GetImageSkiaNamed(image_ids[7]);
+  bottom_right = *rb.GetImageSkiaNamed(image_ids[8]);
+}
+
+BorderImages::~BorderImages() {}
+
+void BorderImages::Paint(const gfx::Rect& rect, gfx::Canvas* canvas) const {
+  DCHECK(!top_left.isNull());
+
+  // Images must share widths by column and heights by row as depicted below.
+  //     x0   x1   x2   x3
+  // y0__|____|____|____|
+  // y1__|_tl_|_t__|_tr_|
+  // y2__|_l__|_c__|_r__|
+  // y3__|_bl_|_b__|_br_|
+  const int x[] = { rect.x(), rect.x() + top_left.width(),
+                    rect.right() - top_right.width(), rect.right() };
+  const int y[] = { rect.y(), rect.y() + top_left.height(),
+                    rect.bottom() - bottom_left.height(), rect.bottom() };
+
+  canvas->DrawImageInt(top_left, x[0], y[0]);
+  canvas->TileImageInt(top, x[1], y[0], x[2] - x[1], y[1] - y[0]);
+  canvas->DrawImageInt(top_right, x[2], y[0]);
+  canvas->TileImageInt(left, x[0], y[1], x[1] - x[0], y[2] - y[1]);
+  canvas->DrawImageInt(center, 0, 0, center.width(), center.height(),
+                       x[1], y[1], x[2] - x[1], y[2] - y[1], false);
+  canvas->TileImageInt(right, x[2], y[1], x[3] - x[2], y[2] - y[1]);
+  canvas->DrawImageInt(bottom_left, 0, y[2]);
+  canvas->TileImageInt(bottom, x[1], y[2], x[2] - x[1], y[3] - y[2]);
+  canvas->DrawImageInt(bottom_right, x[2], y[2]);
+}
+
+}  // namespace views