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- /* ====================================================================
- Licensed to the Apache Software Foundation (ASF) under one or more
- contributor license agreements. See the NOTICE file distributed with
- this work for additional information regarding copyright ownership.
- The ASF licenses this file to You under the Apache License, Version 2.0
- (the "License"); you may not use this file except in compliance with
- the License. You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
- ==================================================================== */
-
- package org.apache.poi.hwmf.record;
-
- /**
- * A 16-bit unsigned integer that defines the mapping mode.
- *
- * The MapMode defines how logical units are mapped to physical units;
- * that is, assuming that the origins in both the logical and physical coordinate systems
- * are at the same point on the drawing surface, what is the physical coordinate (x',y')
- * that corresponds to logical coordinate (x,y).
- *
- * For example, suppose the mapping mode is MM_TEXT. Given the following definition of that
- * mapping mode, and an origin (0,0) at the top left corner of the drawing surface, logical
- * coordinate (4,5) would map to physical coordinate (4,5) in pixels.
- *
- * Now suppose the mapping mode is MM_LOENGLISH, with the same origin as the previous
- * example. Given the following definition of that mapping mode, logical coordinate (4,-5)
- * would map to physical coordinate (0.04,0.05) in inches.
- */
- public enum HwmfMapMode {
- /**
- * Each logical unit is mapped to one device pixel.
- * Positive x is to the right; positive y is down.
- */
- MM_TEXT(0x0001, 0),
-
- /**
- * Each logical unit is mapped to 0.1 millimeter.
- * Positive x is to the right; positive y is up.
- */
- MM_LOMETRIC(0x0002, 254),
-
- /**
- * Each logical unit is mapped to 0.01 millimeter.
- * Positive x is to the right; positive y is up.
- */
- MM_HIMETRIC(0x0003, 2540),
-
- /**
- * Each logical unit is mapped to 0.01 inch.
- * Positive x is to the right; positive y is up.
- */
- MM_LOENGLISH(0x0004, 100),
-
- /**
- * Each logical unit is mapped to 0.001 inch.
- * Positive x is to the right; positive y is up.
- */
- MM_HIENGLISH(0x0005, 1000),
-
- /**
- * Each logical unit is mapped to one twentieth (1/20) of a point.
- * In printing, a point is 1/72 of an inch; therefore, 1/20 of a point is 1/1440 of an inch.
- * This unit is also known as a "twip".
- * Positive x is to the right; positive y is up.
- */
- MM_TWIPS(0x0006, 1440),
-
- /**
- * Logical units are mapped to arbitrary device units with equally scaled axes;
- * that is, one unit along the x-axis is equal to one unit along the y-axis.
- * The META_SETWINDOWEXT and META_SETVIEWPORTEXT records specify the units and the
- * orientation of the axes.
- * The processing application SHOULD make adjustments as necessary to ensure the x and y
- * units remain the same size. For example, when the window extent is set, the viewport
- * SHOULD be adjusted to keep the units isotropic.
- */
- MM_ISOTROPIC(0x0007, -1),
-
- /**
- * Logical units are mapped to arbitrary units with arbitrarily scaled axes.
- */
- MM_ANISOTROPIC(0x0008, -1);
-
- /**
- * native flag
- */
- public final int flag;
-
- /**
- * transformation units - usually scale relative to current dpi.
- * when scale == 0, then don't scale
- * when scale == -1, then scale relative to window dimension.
- */
- public final int scale;
-
- HwmfMapMode(int flag, int scale) {
- this.flag = flag;
- this.scale = scale;
- }
-
- public static HwmfMapMode valueOf(int flag) {
- for (HwmfMapMode mm : values()) {
- if (mm.flag == flag) return mm;
- }
- return MM_ISOTROPIC;
- }
- }
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