visual basic 6.0 barcode generator Dimension winSize = getSize(); // size of window Insets ins = getInsets(); // size of borders in Java

Creator PDF-417 2d barcode in Java Dimension winSize = getSize(); // size of window Insets ins = getInsets(); // size of borders

Dimension winSize = getSize(); // size of window Insets ins = getInsets(); // size of borders
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A Frame window consists of two general parts: the border, including the title bar and menu bar (if one exists), and the area in which data can be displayed. The size of a window is obtained by calling getSize( ). It returns the overall dimensions of the window in the form of a Dimension object. A reference to this object is stored in winSize. Dimension has two fields: width and height. Thus, the overall size of the window is found in winSize.width and winSize.height. To find that part of the window in which data can be displayed, you must subtract the portion of the window that is allocated to the border. To do this, you must call getInsets( ). It returns the size of the border in an Insets object, which contains these fields: left, right, top, and bottom. A reference to this object is stored in ins. Recall that the coordinates of the upper-left corner of a window are 0, 0. Thus, the location of the top-left corner of the data area is ins.left, ins.top, and the location of the bottom-right corner is winSize.width right, winSize.height bottom. Next, paint( ) obtains the metrics for the currently selected font, as shown here:
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// Get the size of the currently selected font. FontMetrics fm = g.getFontMetrics();
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The information in fm will be used to compute the height and width of the characters used to display the range of the data. Although the insets determine the maximum region in which data can be displayed, not all is necessarily usable for aesthetic reasons. Often it is more pleasing to leave a small gap between the data and the border. To accomplish this, the data region is further reduced by the values leftGap, topGap, bottomGap, and rightGap. The first three of these contain the
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value 2, but the value of rightGap is computed based on the width of the string that contains the number of elements in the set, as shown here:
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// Compute right gap. rightGap = fm.stringWidth("" + data.length);
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Because the string that displays the number of elements is on the far-right side of the baseline, room must be left for it. This is why the font metrics must be obtained by calling getFontMetrics( ). Using this object, the method stringWidth( ) returns the width of the string, which is assigned to rightGap. Next, the total inset for each side is computed by using all the previously obtained values, and the results are stored in left, top, right, and bottom, as shown here:
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// Compute the total insets for the data region. left = ins.left + leftGap + fm.charWidth('0'); top = ins.top + topGap + fm.getAscent(); bottom = ins.bottom + bottomGap + fm.getAscent(); right = ins.right + rightGap;
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Notice that room is left for displaying the range of the data. The next few lines of code compute the scaling factor:
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/* If minimum value positive, then use 0 as the starting point for the graph. If maximum value is negative, use 0. */ if(min > 0) min = 0; if(max < 0) max = 0; /* Compute the distance between the minimum and maximum values. */ spread = (int) (max - min); // Compute the scaling factor. scale = (double) (winSize.height - bottom - top) / spread;
The process begins first by normalizing the values in min and max. All graphs will set the origin at 0, 0. So, if the minimum value is greater than 0, min is set to 0. If the maximum value is less than 0, max is set to zero. Next, the spread between min and max is computed. This value is then used to compute the scaling factor, which is stored in scale. After computing the scaling factor, the location of the baseline can be found by scaling the value of min, as shown here:
// Find where the baseline goes. baseline = (int) (winSize.height - bottom + min * scale);
If min is zero, the baseline is on the lower edge of the window. Otherwise, it is somewhere in the middle, or if all values are negative, the baseline is at the top.
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