Esempio n. 1
0
        /// <summary>
        /// Ensures that the specified length is converted to pixels if necessary
        /// </summary>
        /// <param name="length"></param>
        protected string NoEms(string length)
        {
            var len = new CssLength(length);

            if (len.Unit == CssUnit.Ems)
            {
                length = len.ConvertEmToPixels(GetEmHeight()).ToString();
            }
            return(length);
        }
Esempio n. 2
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        /// <summary>
        /// Gets the available width for the whole table.
        /// It also sets the value of WidthSpecified
        /// </summary>
        /// <returns></returns>
        /// <remarks>
        /// The table's width can be larger than the result of this method, because of the minimum
        /// size that individual boxes.
        /// </remarks>
        private float GetMaxTableWidth()
        {
            var tblen = new CssLength(_tableBox.MaxWidth);

            if (tblen.Number > 0)
            {
                _widthSpecified = true;
                return(CssValueParser.ParseLength(_tableBox.MaxWidth, _tableBox.ParentBox.AvailableWidth, _tableBox));
            }
            else
            {
                return(9999f);
            }
        }
Esempio n. 3
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        /// <summary>
        /// On image load process is complete with image or without update the image box.
        /// </summary>
        /// <param name="image">the image loaded or null if failed</param>
        /// <param name="rectangle">the source rectangle to draw in the image (empty - draw everything)</param>
        /// <param name="async">is the callback was called async to load image call</param>
        private void OnLoadImageComplete(Image image, Rectangle rectangle, bool async)
        {
            _imageWord.Image          = image;
            _imageWord.ImageRectangle = rectangle;
            _imageLoadingComplete     = true;
            _wordsSizeMeasured        = false;

            if (_imageLoadingComplete && image == null)
            {
                SetErrorBorder();
            }

            if (!HtmlContainer.AvoidImagesLateLoading || async)
            {
                var  width  = new CssLength(Width);
                var  height = new CssLength(Height);
                bool layout = (width.Number <= 0 || width.Unit != CssUnit.Pixels) ||
                              (height.Number <= 0 || height.Unit != CssUnit.Pixels);
                HtmlContainer.RequestRefresh(layout);
            }
        }
Esempio n. 4
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        /// <summary>
        /// Measure image box size by the width\height set on the box and the actual rendered image size.<br/>
        /// If no image exists for the box error icon will be set.
        /// </summary>
        /// <param name="imageWord">the image word to measure</param>
        public static void MeasureImageSize(CssRectImage imageWord)
        {
            ArgChecker.AssertArgNotNull(imageWord, "imageWord");
            ArgChecker.AssertArgNotNull(imageWord.OwnerBox, "imageWord.OwnerBox");

            var width  = new CssLength(imageWord.OwnerBox.Width);
            var height = new CssLength(imageWord.OwnerBox.Height);

            bool hasImageTagWidth  = width.Number > 0 && width.Unit == CssUnit.Pixels;
            bool hasImageTagHeight = height.Number > 0 && height.Unit == CssUnit.Pixels;
            bool scaleImageHeight  = false;

            if (hasImageTagWidth)
            {
                imageWord.Width = width.Number;
            }
            else if (width.Number > 0 && width.IsPercentage)
            {
                imageWord.Width  = width.Number * imageWord.OwnerBox.ContainingBlock.Size.Width;
                scaleImageHeight = true;
            }
            else if (imageWord.Image != null)
            {
                imageWord.Width = imageWord.ImageRectangle == Rectangle.Empty
                                      ? imageWord.Image.Width
                                      : imageWord.ImageRectangle.Width;
            }
            else
            {
                imageWord.Width = hasImageTagHeight ? height.Number / 1.14f : 20;
            }

            var maxWidth = new CssLength(imageWord.OwnerBox.MaxWidth);

            if (maxWidth.Number > 0)
            {
                float maxWidthVal = -1;
                if (maxWidth.Unit == CssUnit.Pixels)
                {
                    maxWidthVal = maxWidth.Number;
                }
                else if (maxWidth.IsPercentage)
                {
                    maxWidthVal = maxWidth.Number * imageWord.OwnerBox.ContainingBlock.Size.Width;
                }

                if (maxWidthVal > -1 && imageWord.Width > maxWidthVal)
                {
                    imageWord.Width  = maxWidthVal;
                    scaleImageHeight = !hasImageTagHeight;
                }
            }

            if (hasImageTagHeight)
            {
                imageWord.Height = height.Number;
            }
            else if (imageWord.Image != null)
            {
                imageWord.Height = imageWord.ImageRectangle == Rectangle.Empty
                                       ? imageWord.Image.Height
                                       : imageWord.ImageRectangle.Height;
            }
            else
            {
                imageWord.Height = imageWord.Width > 0 ? imageWord.Width * 1.14f : 22.8f;
            }

            if (imageWord.Image != null)
            {
                // If only the width was set in the html tag, ratio the height.
                if ((hasImageTagWidth && !hasImageTagHeight) || scaleImageHeight)
                {
                    // Divide the given tag width with the actual image width, to get the ratio.
                    float ratio = imageWord.Width / imageWord.Image.Width;
                    imageWord.Height = imageWord.Image.Height * ratio;
                }
                // If only the height was set in the html tag, ratio the width.
                else if (hasImageTagHeight && !hasImageTagWidth)
                {
                    // Divide the given tag height with the actual image height, to get the ratio.
                    float ratio = imageWord.Height / imageWord.Image.Height;
                    imageWord.Width = imageWord.Image.Width * ratio;
                }
            }

            imageWord.Height += imageWord.OwnerBox.ActualBorderBottomWidth + imageWord.OwnerBox.ActualBorderTopWidth +
                                imageWord.OwnerBox.ActualPaddingTop + imageWord.OwnerBox.ActualPaddingBottom;
        }
Esempio n. 5
0
        /// <summary>
        /// Determine Row and Column Count, and ColumnWidths
        /// </summary>
        /// <returns></returns>
        private float CalculateCountAndWidth()
        {
            //Columns
            if (_columns.Count > 0)
            {
                _columnCount = _columns.Count;
            }
            else
            {
                foreach (CssBox b in _allRows)
                {
                    _columnCount = Math.Max(_columnCount, b.Boxes.Count);
                }
            }

            //Initialize column widths array with NaNs
            _columnWidths = new float[_columnCount];
            for (int i = 0; i < _columnWidths.Length; i++)
            {
                _columnWidths[i] = float.NaN;
            }

            float availCellSpace = GetAvailableCellWidth();

            if (_columns.Count > 0)
            {
                // Fill ColumnWidths array by scanning column widths
                for (int i = 0; i < _columns.Count; i++)
                {
                    var len = new CssLength(_columns[i].Width); //Get specified width

                    if (len.Number > 0)                         //If some width specified
                    {
                        if (len.IsPercentage)                   //Get width as a percentage
                        {
                            _columnWidths[i] = CssValueParser.ParseNumber(_columns[i].Width, availCellSpace);
                        }
                        else if (len.Unit == CssUnit.Pixels || len.Unit == CssUnit.None)
                        {
                            _columnWidths[i] = len.Number; //Get width as an absolute-pixel value
                        }
                    }
                }
            }
            else
            {
                // Fill ColumnWidths array by scanning width in table-cell definitions
                foreach (CssBox row in _allRows)
                {
                    //Check for column width in table-cell definitions
                    for (int i = 0; i < _columnCount; i++)
                    {
                        if (i < 20 || float.IsNaN(_columnWidths[i])) // limit column width check
                        {
                            if (i < row.Boxes.Count && row.Boxes[i].Display == CssConstants.TableCell)
                            {
                                float len = CssValueParser.ParseLength(row.Boxes[i].Width, availCellSpace, row.Boxes[i]);
                                if (len > 0) //If some width specified
                                {
                                    int colspan = GetColSpan(row.Boxes[i]);
                                    len /= Convert.ToSingle(colspan);
                                    for (int j = i; j < i + colspan; j++)
                                    {
                                        _columnWidths[j] = float.IsNaN(_columnWidths[j])
                                                               ? len
                                                               : Math.Max(_columnWidths[j], len);
                                    }
                                }
                            }
                        }
                    }
                }
            }
            return(availCellSpace);
        }