#include "config.h"
#include "DragImage.h"
#include "FloatRoundedRect.h"
#include "Font.h"
#include "FontCache.h"
#include "FontDescription.h"
#include "FontSelector.h"
#include "GraphicsContext.h"
#include "HWndDC.h"
#include "Image.h"
#include "URL.h"
#include "StringTruncator.h"
#include "TextRun.h"
#include "WebCoreTextRenderer.h"
#include <wtf/RetainPtr.h>
#include <wtf/win/GDIObject.h>
#include <windows.h>
namespace WebCore {
GDIObject<HBITMAP> allocImage(HDC, IntSize, PlatformGraphicsContext** targetRef);
void deallocContext(PlatformGraphicsContext* target);
IntSize dragImageSize(DragImageRef image)
{
if (!image)
return IntSize();
BITMAP b;
GetObject(image, sizeof(BITMAP), &b);
return IntSize(b.bmWidth, b.bmHeight);
}
void deleteDragImage(DragImageRef image)
{
if (image)
::DeleteObject(image);
}
DragImageRef dissolveDragImageToFraction(DragImageRef image, float)
{
return image;
}
DragImageRef createDragImageIconForCachedImageFilename(const String& filename)
{
SHFILEINFO shfi = {0};
String fname = filename;
if (FAILED(SHGetFileInfo(static_cast<LPCWSTR>(fname.charactersWithNullTermination().data()), FILE_ATTRIBUTE_NORMAL,
&shfi, sizeof(shfi), SHGFI_ICON | SHGFI_USEFILEATTRIBUTES)))
return 0;
ICONINFO iconInfo;
if (!GetIconInfo(shfi.hIcon, &iconInfo)) {
DestroyIcon(shfi.hIcon);
return 0;
}
DestroyIcon(shfi.hIcon);
DeleteObject(iconInfo.hbmMask);
return iconInfo.hbmColor;
}
const float DragLabelBorderX = 4;
const float DragLabelBorderY = 2;
const float DragLabelRadius = 5;
const float LabelBorderYOffset = 2;
const float MinDragLabelWidthBeforeClip = 120;
const float MaxDragLabelWidth = 200;
const float MaxDragLabelStringWidth = (MaxDragLabelWidth - 2 * DragLabelBorderX);
const float DragLinkLabelFontsize = 11;
const float DragLinkUrlFontSize = 10;
static Font dragLabelFont(int size, bool bold, FontRenderingMode renderingMode)
{
Font result;
#if !OS(WINCE)
NONCLIENTMETRICS metrics;
metrics.cbSize = sizeof(metrics);
SystemParametersInfo(SPI_GETNONCLIENTMETRICS, metrics.cbSize, &metrics, 0);
FontDescription description;
description.setWeight(bold ? FontWeightBold : FontWeightNormal);
description.setOneFamily(metrics.lfSmCaptionFont.lfFaceName);
description.setSpecifiedSize((float)size);
description.setComputedSize((float)size);
description.setRenderingMode(renderingMode);
result = Font(description, 0, 0);
result.update(0);
#endif
return result;
}
DragImageRef createDragImageForLink(URL& url, const String& inLabel, FontRenderingMode fontRenderingMode)
{
const Font* labelFont;
const Font* urlFont;
FontCachePurgePreventer fontCachePurgePreventer;
if (fontRenderingMode == AlternateRenderingMode) {
static const Font alternateRenderingModeLabelFont = dragLabelFont(DragLinkLabelFontsize, true, AlternateRenderingMode);
static const Font alternateRenderingModeURLFont = dragLabelFont(DragLinkUrlFontSize, false, AlternateRenderingMode);
labelFont = &alternateRenderingModeLabelFont;
urlFont = &alternateRenderingModeURLFont;
} else {
static const Font normalRenderingModeLabelFont = dragLabelFont(DragLinkLabelFontsize, true, NormalRenderingMode);
static const Font normalRenderingModeURLFont = dragLabelFont(DragLinkUrlFontSize, false, NormalRenderingMode);
labelFont = &normalRenderingModeLabelFont;
urlFont = &normalRenderingModeURLFont;
}
bool drawURLString = true;
bool clipURLString = false;
bool clipLabelString = false;
String urlString = url.string();
String label = inLabel;
if (label.isEmpty()) {
drawURLString = false;
label = urlString;
}
TextRun labelRun(label.impl());
TextRun urlRun(urlString.impl());
IntSize labelSize(labelFont->width(labelRun), labelFont->fontMetrics().ascent() + labelFont->fontMetrics().descent());
if (labelSize.width() > MaxDragLabelStringWidth) {
labelSize.setWidth(MaxDragLabelStringWidth);
clipLabelString = true;
}
IntSize urlStringSize;
IntSize imageSize(labelSize.width() + DragLabelBorderX * 2, labelSize.height() + DragLabelBorderY * 2);
if (drawURLString) {
urlStringSize.setWidth(urlFont->width(urlRun));
urlStringSize.setHeight(urlFont->fontMetrics().ascent() + urlFont->fontMetrics().descent());
imageSize.setHeight(imageSize.height() + urlStringSize.height());
if (urlStringSize.width() > MaxDragLabelStringWidth) {
imageSize.setWidth(MaxDragLabelWidth);
clipURLString = true;
} else
imageSize.setWidth(std::max(labelSize.width(), urlStringSize.width()) + DragLabelBorderX * 2);
}
HWndDC dc(0);
auto workingDC = adoptGDIObject(::CreateCompatibleDC(dc));
if (!workingDC)
return 0;
PlatformGraphicsContext* contextRef;
auto image = allocImage(workingDC.get(), imageSize, &contextRef);
if (!image)
return 0;
::SelectObject(workingDC.get(), image.get());
GraphicsContext context(contextRef);
static const Color backgroundColor(140, 140, 140);
static const IntSize radii(DragLabelRadius, DragLabelRadius);
IntRect rect(0, 0, imageSize.width(), imageSize.height());
context.fillRoundedRect(FloatRoundedRect(rect, radii, radii, radii, radii), backgroundColor, ColorSpaceDeviceRGB);
static const Color topColor(0, 0, 0, 255); static const Color bottomColor(255, 255, 255, 127); if (drawURLString) {
if (clipURLString)
urlString = StringTruncator::rightTruncate(urlString, imageSize.width() - (DragLabelBorderX * 2.0f), *urlFont, StringTruncator::EnableRoundingHacks);
IntPoint textPos(DragLabelBorderX, imageSize.height() - (LabelBorderYOffset + urlFont->fontMetrics().descent()));
WebCoreDrawDoubledTextAtPoint(context, urlString, textPos, *urlFont, topColor, bottomColor);
}
if (clipLabelString)
label = StringTruncator::rightTruncate(label, imageSize.width() - (DragLabelBorderX * 2.0f), *labelFont, StringTruncator::EnableRoundingHacks);
IntPoint textPos(DragLabelBorderX, DragLabelBorderY + labelFont->pixelSize());
WebCoreDrawDoubledTextAtPoint(context, label, textPos, *labelFont, topColor, bottomColor);
deallocContext(contextRef);
return image.leak();
}
}