michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "inFlasher.h"
michael@0: #include "inLayoutUtils.h"
michael@0: 
michael@0: #include "nsIDOMElement.h"
michael@0: #include "nsIServiceManager.h"
michael@0: #include "nsIPresShell.h"
michael@0: #include "nsIFrame.h"
michael@0: #include "nsIWidget.h"
michael@0: #include "nsReadableUtils.h"
michael@0: #include "nsRenderingContext.h"
michael@0: #include "nsIDOMWindow.h"
michael@0: #include "nsIContent.h"
michael@0: 
michael@0: #include "prprf.h"
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: inFlasher::inFlasher() :
michael@0:   mColor(NS_RGB(0,0,0)),
michael@0:   mThickness(0),
michael@0:   mInvert(false)
michael@0: {
michael@0: }
michael@0: 
michael@0: inFlasher::~inFlasher()
michael@0: {
michael@0: }
michael@0: 
michael@0: NS_IMPL_ISUPPORTS(inFlasher, inIFlasher)
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: // inIFlasher
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: inFlasher::GetColor(nsAString& aColor)
michael@0: {
michael@0:   // Copied from nsGenericHTMLElement::ColorToString()
michael@0:   char buf[10];
michael@0:   PR_snprintf(buf, sizeof(buf), "#%02x%02x%02x",
michael@0:               NS_GET_R(mColor), NS_GET_G(mColor), NS_GET_B(mColor));
michael@0:   CopyASCIItoUTF16(buf, aColor);
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: inFlasher::SetColor(const nsAString& aColor)
michael@0: {
michael@0:   NS_ENSURE_FALSE(aColor.IsEmpty(), NS_ERROR_ILLEGAL_VALUE);
michael@0: 
michael@0:   nsAutoString colorStr;
michael@0:   colorStr.Assign(aColor);
michael@0: 
michael@0:   if (colorStr.CharAt(0) != '#') {
michael@0:     if (NS_ColorNameToRGB(colorStr, &mColor)) {
michael@0:       return NS_OK;
michael@0:     }
michael@0:   }
michael@0:   else {
michael@0:     colorStr.Cut(0, 1);
michael@0:     if (NS_HexToRGB(colorStr, &mColor)) {
michael@0:       return NS_OK;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   return NS_ERROR_ILLEGAL_VALUE;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: inFlasher::GetThickness(uint16_t *aThickness)
michael@0: {
michael@0:   NS_PRECONDITION(aThickness, "Null pointer");
michael@0:   *aThickness = mThickness;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: inFlasher::SetThickness(uint16_t aThickness)
michael@0: {
michael@0:   mThickness = aThickness;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: inFlasher::GetInvert(bool *aInvert)
michael@0: {
michael@0:   NS_PRECONDITION(aInvert, "Null pointer");
michael@0:   *aInvert = mInvert;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: inFlasher::SetInvert(bool aInvert)
michael@0: {
michael@0:   mInvert = aInvert;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: inFlasher::RepaintElement(nsIDOMElement* aElement)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aElement);
michael@0:   nsIFrame* frame = inLayoutUtils::GetFrameFor(aElement);
michael@0:   if (!frame) return NS_OK;
michael@0: 
michael@0:   frame->InvalidateFrame();
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: inFlasher::DrawElementOutline(nsIDOMElement* aElement)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aElement);
michael@0:   nsCOMPtr<nsIDOMWindow> window = inLayoutUtils::GetWindowFor(aElement);
michael@0:   if (!window) return NS_OK;
michael@0:   nsCOMPtr<nsIPresShell> presShell = inLayoutUtils::GetPresShellFor(window);
michael@0:   if (!presShell) return NS_OK;
michael@0: 
michael@0:   nsIFrame* frame = inLayoutUtils::GetFrameFor(aElement);
michael@0: 
michael@0:   bool isFirstFrame = true;
michael@0: 
michael@0:   while (frame) {
michael@0:     nsPoint offset;
michael@0:     nsIWidget* widget = frame->GetNearestWidget(offset);
michael@0:     if (widget) {
michael@0:       nsRefPtr<nsRenderingContext> rcontext = new nsRenderingContext();
michael@0:       rcontext->Init(frame->PresContext()->DeviceContext(),
michael@0:                      widget->GetThebesSurface());
michael@0: 
michael@0:       nsRect rect(offset, frame->GetSize());
michael@0:       if (mInvert) {
michael@0:         rcontext->InvertRect(rect);
michael@0:       }
michael@0: 
michael@0:       bool isLastFrame = frame->GetNextContinuation() == nullptr;
michael@0:       DrawOutline(rect.x, rect.y, rect.width, rect.height, rcontext,
michael@0:                   isFirstFrame, isLastFrame);
michael@0:       isFirstFrame = false;
michael@0:     }
michael@0:     frame = frame->GetNextContinuation();
michael@0:   }
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: inFlasher::ScrollElementIntoView(nsIDOMElement *aElement)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aElement);
michael@0:   nsCOMPtr<nsIDOMWindow> window = inLayoutUtils::GetWindowFor(aElement);
michael@0:   if (!window) {
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIPresShell> presShell = inLayoutUtils::GetPresShellFor(window);
michael@0:   if (!presShell) {
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
michael@0:   presShell->ScrollContentIntoView(content,
michael@0:                                    nsIPresShell::ScrollAxis(),
michael@0:                                    nsIPresShell::ScrollAxis(),
michael@0:                                    nsIPresShell::SCROLL_OVERFLOW_HIDDEN);
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: // inFlasher
michael@0: 
michael@0: void
michael@0: inFlasher::DrawOutline(nscoord aX, nscoord aY, nscoord aWidth, nscoord aHeight,
michael@0:                        nsRenderingContext* aRenderContext,
michael@0:                        bool aDrawBegin, bool aDrawEnd)
michael@0: {
michael@0:   aRenderContext->SetColor(mColor);
michael@0: 
michael@0:   DrawLine(aX, aY, aWidth, DIR_HORIZONTAL, BOUND_OUTER, aRenderContext);
michael@0:   if (aDrawBegin) {
michael@0:     DrawLine(aX, aY, aHeight, DIR_VERTICAL, BOUND_OUTER, aRenderContext);
michael@0:   }
michael@0:   DrawLine(aX, aY+aHeight, aWidth, DIR_HORIZONTAL, BOUND_INNER, aRenderContext);
michael@0:   if (aDrawEnd) {
michael@0:     DrawLine(aX+aWidth, aY, aHeight, DIR_VERTICAL, BOUND_INNER, aRenderContext);
michael@0:   }
michael@0: }
michael@0: 
michael@0: void
michael@0: inFlasher::DrawLine(nscoord aX, nscoord aY, nscoord aLength,
michael@0:                     bool aDir, bool aBounds,
michael@0:                     nsRenderingContext* aRenderContext)
michael@0: {
michael@0:   nscoord thickTwips = nsPresContext::CSSPixelsToAppUnits(mThickness);
michael@0:   if (aDir) { // horizontal
michael@0:     aRenderContext->FillRect(aX, aY+(aBounds?0:-thickTwips), aLength, thickTwips);
michael@0:   } else { // vertical
michael@0:     aRenderContext->FillRect(aX+(aBounds?0:-thickTwips), aY, thickTwips, aLength);
michael@0:   }
michael@0: }