예제 #1
0
        /// <summary>
        /// Simplest alignment, just arrange words.
        /// </summary>
        /// <param name="g"></param>
        /// <param name="lineBox"></param>
        private static void ApplyLeftAlignment(Graphics g, CssLineBox line)
        {
            //No alignment needed.

            //foreach (LineBoxRectangle r in line.Rectangles)
            //{
            //    float curx = r.Left + (r.Index == 0 ? r.OwnerBox.ActualPaddingLeft + r.OwnerBox.ActualBorderLeftWidth / 2 : 0);

            //    if (r.SpaceBefore) curx += r.OwnerBox.ActualWordSpacing;

            //    foreach (BoxWord word in r.Words)
            //    {
            //        word.Left = curx;
            //        word.Top = r.Top;// +r.OwnerBox.ActualPaddingTop + r.OwnerBox.ActualBorderTopWidth / 2;

            //        curx = word.Right + r.OwnerBox.ActualWordSpacing;
            //    }
            //}
        }
예제 #2
0
        /// <summary>
        /// Applies centered alignment to the text on the linebox
        /// </summary>
        /// <param name="g"></param>
        /// <param name="lineBox"></param>
        private static void ApplyJustifyAlignment(Graphics g, CssLineBox lineBox)
        {
            if (lineBox.Equals(lineBox.OwnerBox.LineBoxes[lineBox.OwnerBox.LineBoxes.Count - 1]))
            {
                return;
            }

            float indent     = lineBox.Equals(lineBox.OwnerBox.LineBoxes[0]) ? lineBox.OwnerBox.ActualTextIndent : 0f;
            float textSum    = 0f;
            float words      = 0f;
            float availWidth = lineBox.OwnerBox.ClientRectangle.Width - indent;

            #region Gather text sum

            foreach (CssBoxWord w in lineBox.Words)
            {
                textSum += w.Width;
                words   += 1f;
            }

            #endregion

            if (words <= 0f)
            {
                return;                                     //Avoid Zero division
            }
            float spacing = (availWidth - textSum) / words; //Spacing that will be used
            float curx    = lineBox.OwnerBox.ClientLeft + indent;

            foreach (CssBoxWord word in lineBox.Words)
            {
                word.Left = curx;
                curx      = word.Right + spacing;

                if (word == lineBox.Words[lineBox.Words.Count - 1])
                {
                    word.Left = lineBox.OwnerBox.ClientRight - word.Width;
                }

                //TODO: Background rectangles are being deactivated when justifying text.
            }
        }
예제 #3
0
        /// <summary>
        /// Creates line boxes for the specified blockbox
        /// </summary>
        /// <param name="g"></param>
        /// <param name="blockBox"></param>
        public static void CreateLineBoxes(Graphics g, CssBox blockBox)
        {
            blockBox.LineBoxes.Clear();

            float maxRight = blockBox.ActualRight - blockBox.ActualPaddingRight - blockBox.ActualBorderRightWidth;

            //Get the start x and y of the blockBox
            float startx = blockBox.Location.X + blockBox.ActualPaddingLeft - 0 + blockBox.ActualBorderLeftWidth;
            //TODO: Check for floats
            float starty = blockBox.Location.Y + blockBox.ActualPaddingTop - 0 + blockBox.ActualBorderTopWidth;
            float curx   = startx + blockBox.ActualTextIndent;
            float cury   = starty;

            //Reminds the maximum bottom reached
            float maxBottom = starty;

            //Extra amount of spacing that should be applied to lines when breaking them.
            float lineSpacing = 0f;

            //First line box
            var line = new CssLineBox(blockBox);

            //Flow words and boxes
            FlowBox(g, blockBox, blockBox, maxRight, lineSpacing, startx, ref line, ref curx, ref cury, ref maxBottom);

            //Gets the rectangles foreach linebox
            foreach (CssLineBox linebox in blockBox.LineBoxes)
            {
                BubbleRectangles(blockBox, linebox);
                linebox.AssignRectanglesToBoxes();
                ApplyAlignment(g, linebox);
                if (blockBox.Direction == CssConstants.Rtl)
                {
                    ApplyRightToLeft(linebox);
                }

                //linebox.DrawRectangles(g);
            }

            blockBox.ActualBottom = maxBottom + blockBox.ActualPaddingBottom + blockBox.ActualBorderBottomWidth;
        }
예제 #4
0
        /// <summary>
        /// Applies right alignment to the text on the linebox
        /// </summary>
        /// <param name="g"></param>
        /// <param name="lineBox"></param>
        private static void ApplyRightAlignment(Graphics g, CssLineBox line)
        {
            if (line.Words.Count == 0)
            {
                return;
            }


            CssBoxWord lastWord = line.Words[line.Words.Count - 1];
            float      right    = line.OwnerBox.ActualRight - line.OwnerBox.ActualPaddingRight -
                                  line.OwnerBox.ActualBorderRightWidth;
            float diff = right - lastWord.Right - lastWord.LastMeasureOffset.X -
                         lastWord.OwnerBox.ActualBorderRightWidth - lastWord.OwnerBox.ActualPaddingRight;


            if (diff <= 0)
            {
                return;
            }

            //if (line.OwnerBox.Direction == CssConstants.Rtl)
            //{

            //}

            foreach (CssBoxWord word in line.Words)
            {
                word.Left += diff;
            }

            foreach (CssBox b in line.Rectangles.Keys)
            {
                RectangleF r = b.Rectangles[line];
                b.Rectangles[line] = new RectangleF(r.X + diff, r.Y, r.Width, r.Height);
            }
        }
예제 #5
0
        /// <summary>
        /// Recursively flows the content of the box using the inline model
        /// </summary>
        /// <param name="g">Device Info</param>
        /// <param name="blockbox">Blockbox that contains the text flow</param>
        /// <param name="box">Current box to flow its content</param>
        /// <param name="maxright">Maximum reached right</param>
        /// <param name="linespacing">Space to use between rows of text</param>
        /// <param name="startx">x starting coordinate for when breaking lines of text</param>
        /// <param name="line">Current linebox being used</param>
        /// <param name="curx">Current x coordinate that will be the left of the next word</param>
        /// <param name="cury">Current y coordinate that will be the top of the next word</param>
        /// <param name="maxbottom">Maximum bottom reached so far</param>
        private static void FlowBox(Graphics g, CssBox blockbox, CssBox box, float maxright, float linespacing,
                                    float startx, ref CssLineBox line, ref float curx, ref float cury,
                                    ref float maxbottom)
        {
            box.FirstHostingLineBox = line;

            foreach (CssBox b in box.Boxes)
            {
                float leftspacing   = b.ActualMarginLeft + b.ActualBorderLeftWidth + b.ActualPaddingLeft;
                float rightspacing  = b.ActualMarginRight + b.ActualBorderRightWidth + b.ActualPaddingRight;
                float topspacing    = b.ActualBorderTopWidth + b.ActualPaddingTop;
                float bottomspacing = b.ActualBorderBottomWidth + b.ActualPaddingTop;

                b.RectanglesReset();
                b.MeasureWordsSize(g);

                curx += leftspacing;

                if (b.Words.Count > 0)
                {
                    #region Flow words

                    foreach (CssBoxWord word in b.Words)
                    {
                        //curx += word.SpacesBeforeWidth;

                        if ((b.WhiteSpace != CssConstants.Nowrap && curx + word.Width + rightspacing > maxright) ||
                            word.IsLineBreak)
                        {
                            #region Break line

                            curx = startx;
                            cury = maxbottom + linespacing;

                            line = new CssLineBox(blockbox);

                            if (word.IsImage || word.Equals(b.FirstWord))
                            {
                                curx += leftspacing;
                            }

                            #endregion
                        }

                        line.ReportExistanceOf(word);

                        word.Left = curx;       // -word.LastMeasureOffset.X + 1;
                        word.Top  = cury;       // - word.LastMeasureOffset.Y;

                        curx      = word.Right; // +word.SpacesAfterWidth;
                        maxbottom = Math.Max(maxbottom, word.Bottom);
                        //+ (word.IsImage ? topspacing + bottomspacing : 0));

                        _lastTreatedWord = word;
                    }

                    #endregion
                }
                else
                {
                    FlowBox(g, blockbox, b, maxright, linespacing, startx, ref line, ref curx, ref cury, ref maxbottom);
                }

                curx += rightspacing;
            }

            box.LastHostingLineBox = line;
        }