class Xls (View source)
Get the width of a column in pixels. We use the relationship y = ceil(7x) where x is the width in intrinsic Excel units (measuring width in number of normal characters) This holds for Arial 10.
Convert the height of a cell from user's units to pixels. By interpolation the relationship is: y = 4/3x. If the height hasn't been set by the user we use the default value. If the row is hidden we use a value of zero.
at line 109
getDistanceX(Worksheet $sheet, string $startColumn = 'A', int $startOffsetX = 0, string $endColumn = 'A', int $endOffsetX = 0)
Get the horizontal distance in pixels between two anchors The distanceX is found as sum of all the spanning columns widths minus correction for the two offsets.
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getDistanceY(Worksheet $sheet, int $startRow = 1, int $startOffsetY = 0, int $endRow = 1, int $endOffsetY = 0)
Get the vertical distance in pixels between two anchors The distanceY is found as sum of all the spanning rows minus two offsets.
at line 212
oneAnchor2twoAnchor(Worksheet $sheet, string $coordinates, int $offsetX, int $offsetY, int $width, int $height)
Convert 1-cell anchor coordinates to 2-cell anchor coordinates This function is ported from PEAR Spreadsheet_Writer_Excel with small modifications.
Calculate the vertices that define the position of the image as required by the OBJ record.
+------------+------------+ | A | B |
+-----+------------+------------+ | |(x1,y1) | | | 1 |(A1)._______|______ | | | | | | | | | | | +-----+----| BITMAP |-----+ | | | | | | 2 | |______________. | | | | (B2)| | | | (x2,y2)| +---- +------------+------------+
Example of a bitmap that covers some of the area from cell A1 to cell B2.
Based on the width and height of the bitmap we need to calculate 8 vars: $col_start, $row_start, $col_end, $row_end, $x1, $y1, $x2, $y2. The width and height of the cells are also variable and have to be taken into account. The values of $col_start and $row_start are passed in from the calling function. The values of $col_end and $row_end are calculated by subtracting the width and height of the bitmap from the width and height of the underlying cells. The vertices are expressed as a percentage of the underlying cell width as follows (rhs values are in pixels):
x1 = X / W *1024 y1 = Y / H *256 x2 = (X-1) / W *1024 y2 = (Y-1) / H *256 Where: X is distance from the left side of the underlying cell Y is distance from the top of the underlying cell W is the width of the cell H is the height of the cell