示例#1
0
        /// <summary>
        /// Renders the specified HTML source on the specified location and max size restriction.<br/>
        /// If <paramref name="maxSize"/>.Width is zero the html will use all the required width, otherwise it will perform line
        /// wrap as specified in the html<br/>
        /// If <paramref name="maxSize"/>.Height is zero the html will use all the required height, otherwise it will clip at the
        /// given max height not rendering the html below it.<br/>
        /// Returned is the actual width and height of the rendered html.<br/>
        /// </summary>
        /// <param name="g">Device to render with</param>
        /// <param name="html">HTML source to render</param>
        /// <param name="location">the top-left most location to start render the html at</param>
        /// <param name="maxSize">the max size of the rendered html (if height above zero it will be clipped)</param>
        /// <param name="cssData">optional: the style to use for html rendering (default - use W3 default style)</param>
        /// <param name="useGdiPlusTextRendering">true - use GDI+ text rendering, false - use GDI text rendering</param>
        /// <param name="stylesheetLoad">optional: can be used to overwrite stylesheet resolution logic</param>
        /// <param name="imageLoad">optional: can be used to overwrite image resolution logic</param>
        /// <returns>the actual size of the rendered html</returns>
        private static SizeF RenderHtml(Graphics g, string html, Point location, SizeF maxSize, CssData cssData, bool useGdiPlusTextRendering, EventHandler <HtmlStylesheetLoadEventArgs> stylesheetLoad, EventHandler <HtmlImageLoadEventArgs> imageLoad)
        {
            SizeF actualSize = SizeF.Empty;

            if (!string.IsNullOrEmpty(html))
            {
                using (var container = new HtmlContainer()) {
                    container.ScrollOffset            = location;
                    container.MaxSize                 = maxSize;
                    container.AvoidAsyncImagesLoading = true;
                    container.AvoidImagesLateLoading  = true;
                    container.UseGdiPlusTextRendering = useGdiPlusTextRendering;

                    if (stylesheetLoad != null)
                    {
                        container.StylesheetLoad += stylesheetLoad;
                    }
                    if (imageLoad != null)
                    {
                        container.ImageLoad += imageLoad;
                    }

                    container.SetHtml(html, cssData);
                    container.PerformLayout(g);
                    container.PerformPaint(g);

                    actualSize = container.ActualSize;
                }
            }

            return(actualSize);
        }
示例#2
0
        /// <summary>
        /// On tooltip appear set the html by the associated control, layout and set the tooltip size by the html size.
        /// </summary>
        protected virtual void OnToolTipPopup(PopupEventArgs e)
        {
            //Create fragment container
            HtmlContainer.SetHtml(YamuiThemeManager.WrapToolTipText(GetToolTip(e.AssociatedControl)), YamuiThemeManager.CurrentThemeCss);
            HtmlContainer.MaxSize = MaximumSize;

            //Measure size of the container
            using (var g = e.AssociatedControl.CreateGraphics()) {
                g.TextRenderingHint = _textRenderingHint;
                HtmlContainer.PerformLayout(g);
            }

            //Set the size of the tooltip
            var desiredWidth  = (int)Math.Ceiling(MaximumSize.Width > 0 ? Math.Min(HtmlContainer.ActualSize.Width, MaximumSize.Width) : HtmlContainer.ActualSize.Width);
            var desiredHeight = (int)Math.Ceiling(MaximumSize.Height > 0 ? Math.Min(HtmlContainer.ActualSize.Height, MaximumSize.Height) : HtmlContainer.ActualSize.Height);

            e.ToolTipSize = new Size(desiredWidth, desiredHeight);

#if !MONO
            // start mouse handle timer
            if (_allowLinksHandling)
            {
                _associatedControl = e.AssociatedControl;
                _linkHandlingTimer.Start();
            }
#endif
        }