Index: chrome/renderer/print_web_view_helper.cc |
diff --git a/chrome/renderer/print_web_view_helper.cc b/chrome/renderer/print_web_view_helper.cc |
index b31cd851cfe5213c2219515b3dde4681cd01e5f7..1a06ad66eb0866ecd413aa2de5f1fa2a7240cf96 100644 |
--- a/chrome/renderer/print_web_view_helper.cc |
+++ b/chrome/renderer/print_web_view_helper.cc |
@@ -49,6 +49,10 @@ |
#include "skia/ext/vector_canvas.h" |
#include "skia/ext/vector_platform_device_skia.h" |
#include "third_party/skia/include/core/SkTypeface.h" |
+#if defined(OS_WIN) // Currently Windows only |
+#include "ui/gfx/canvas.h" |
+#include "ui/gfx/render_text.h" |
+#endif // USE_SKIA && defined(OS_WIN) |
#elif defined(OS_MACOSX) |
#include <CoreGraphics/CGContext.h> |
@@ -394,6 +398,65 @@ SkPoint GetHeaderFooterPosition( |
return point; |
} |
+#if defined(USE_SKIA) && defined(OS_WIN) |
+void PrintHeaderFooterByRenderText( |
+ const string16& text, |
+ WebKit::WebCanvas* canvas, |
+ HeaderFooterPaint paint, |
+ float webkit_scale_factor, |
+ const PageSizeMargins& page_layout, |
+ printing::HorizontalHeaderFooterPosition horizontal_position, |
+ printing::VerticalHeaderFooterPosition vertical_position, |
+ double offset_to_baseline) { |
+ // TODO(arthurhsu): Following code works on Windows only so far. |
+ // See crbug.com/108599 and its blockers for more information. |
+ scoped_ptr<gfx::RenderText> render_text(gfx::RenderText::CreateRenderText()); |
+ render_text->SetText(text); |
+ int font_size = printing::kSettingHeaderFooterFontSize / webkit_scale_factor; |
+ render_text->SetFontSize(font_size); |
+ gfx::Size text_size = render_text->GetStringSize(); |
+ int text_height = text_size.height(); |
+ int y_offset = text_height - font_size; |
+ SkScalar margin_left = page_layout.margin_left / webkit_scale_factor; |
+ SkScalar margin_top = page_layout.margin_top / webkit_scale_factor; |
+ SkScalar content_height = page_layout.content_height / webkit_scale_factor; |
+ |
+ int text_width = text_size.width(); |
+ SkPoint point = GetHeaderFooterPosition(webkit_scale_factor, page_layout, |
+ horizontal_position, |
+ vertical_position, offset_to_baseline, |
+ SkScalarToDouble(text_width)); |
+ point.set(point.x() + margin_left, point.y() + margin_top); |
+ // Workaround clipping issue of RenderText by adjusting the y_offset to make |
+ // sure that display rect overlaps with content area. |
+ if (vertical_position == printing::TOP) { |
+ // Bottom of display rect must overlap with content. |
+ int display_rect_y = point.y() - y_offset + text_height; |
+ int content_y = margin_top + 1; |
+ if (display_rect_y < content_y) { |
+ y_offset = point.y() + text_height - content_y; |
+ } |
+ } else { // BOTTOM |
+ // Top of display rect must overlap with content. |
+ int display_rect_y = point.y() - y_offset; |
+ int content_y = margin_top + content_height - 1; |
+ if (display_rect_y > content_y) { |
+ y_offset = point.y() - content_y; |
+ } |
+ } |
+ |
+ gfx::Rect rect(point.x(), point.y() - y_offset, text_width, text_height); |
+ render_text->SetDisplayRect(rect); |
+ int save_count = canvas->save(); |
+ canvas->translate(-margin_left, -margin_top); |
+ { |
+ gfx::Canvas gfx_canvas(canvas); |
+ render_text->Draw(&gfx_canvas); |
+ } |
+ canvas->restoreToCount(save_count); |
+} |
+#endif |
+ |
// Given a text, the positions, and the paint object, this method gets the |
// coordinates and prints the text at those coordinates on the canvas. |
void PrintHeaderFooterText( |
@@ -406,6 +469,12 @@ void PrintHeaderFooterText( |
printing::VerticalHeaderFooterPosition vertical_position, |
double offset_to_baseline) { |
#if defined(USE_SKIA) |
+#if defined(OS_WIN) |
+ PrintHeaderFooterByRenderText(text, canvas, paint, webkit_scale_factor, |
+ page_layout, horizontal_position, vertical_position, offset_to_baseline); |
+#else |
+ // TODO(arthurhsu): following code has issues with i18n BiDi, see |
+ // crbug.com/108599. |
size_t text_byte_length = text.length() * sizeof(char16); |
double text_width_in_points = SkScalarToDouble(paint.measureText( |
text.c_str(), text_byte_length)); |
@@ -417,6 +486,7 @@ void PrintHeaderFooterText( |
paint.getTextSize() / webkit_scale_factor)); |
canvas->drawText(text.c_str(), text_byte_length, point.x(), point.y(), |
paint); |
+#endif // USE_SKIA && OS_WIN |
#elif defined(OS_MACOSX) |
ScopedCFTypeRef<CFStringRef> cf_text(base::SysUTF16ToCFStringRef(text)); |
ScopedCFTypeRef<CFAttributedStringRef> cf_attr_text( |