4 METHOD(Image, configureImage, void(entity, string))
5 METHOD(Image, draw, void(entity))
6 METHOD(Image, toString, string(entity))
7 METHOD(Image, resizeNotify, void(entity, vector, vector, vector, vector))
8 METHOD(Image, updateAspect, void(entity))
9 METHOD(Image, initZoom, void(entity))
10 METHOD(Image, setZoom, void(entity, float, float))
11 METHOD(Image, drag_setStartPos, float(entity, vector))
12 METHOD(Image, drag, float(entity, vector))
13 ATTRIB(Image, src, string, string_null)
14 ATTRIB(Image, color, vector, '1 1 1')
15 ATTRIB(Image, forcedAspect, float, 0) // special values: -1 keep image aspect ratio, -2 keep image size but bound to the containing box, -3 always keep image size
16 ATTRIB(Image, zoomBox, float, 0) // used by forcedAspect -2 when the image is larger than the containing box
17 ATTRIB(Image, zoomFactor, float, 1)
18 ATTRIB(Image, zoomOffset, vector, '0.5 0.5 0')
19 ATTRIB(Image, zoomSnapToTheBox, float, 1) // snap the zoomed in image to the box borders when zooming/dragging it
20 ATTRIB(Image, zoomTime, float, 0)
21 ATTRIB(Image, zoomLimitedByTheBox, float, 0) // forbids zoom if image would be larger than the containing box
22 ATTRIB(Image, zoomMax, float, 0)
23 ATTRIB(Image, start_zoomOffset, vector, '0 0 0')
24 ATTRIB(Image, start_coords, vector, '0 0 0')
25 ATTRIB(Image, imgOrigin, vector, '0 0 0')
26 ATTRIB(Image, imgSize, vector, '0 0 0')
31 string Image_toString(entity me)
35 void Image_configureImage(entity me, string path)
39 void Image_initZoom(entity me)
41 me.zoomOffset = '0.5 0.5 0';
43 if (me.forcedAspect == -2)
44 me.zoomBox = -1; // calculate zoomBox at the first updateAspect call
45 if (me.zoomLimitedByTheBox)
46 me.zoomMax = -1; // calculate zoomMax at the first updateAspect call
49 void Image_draw(entity me)
51 if(me.imgSize.x > 1 || me.imgSize.y > 1)
53 draw_Picture(me.imgOrigin, me.src, me.imgSize, me.color, 1);
54 if(me.imgSize.x > 1 || me.imgSize.y > 1)
56 SUPER(Image).draw(me);
58 void Image_updateAspect(entity me)
61 if(me.size.x <= 0 || me.size.y <= 0)
63 if(me.forcedAspect == 0)
65 me.imgOrigin = '0 0 0';
71 if(me.forcedAspect < 0)
74 sz = draw_PictureSize(me.src);
75 if(sz.x <= 0 || sz.y <= 0)
77 // image is broken or doesn't exist, set the size for the placeholder image
84 asp = me.forcedAspect;
86 if(me.forcedAspect <= -2)
88 me.imgSize_x = sz.x / me.size.x;
89 me.imgSize_y = sz.y / me.size.y;
90 if(me.zoomBox < 0 && (me.imgSize.x > 1 || me.imgSize.y > 1))
92 // image larger than the containing box, zoom it out to fit into the box
93 if(me.size.x > asp * me.size.y)
94 me.zoomBox = (me.size.y * asp / me.size.x) / me.imgSize.x;
96 me.zoomBox = (me.size.x / (asp * me.size.y)) / me.imgSize.y;
97 me.zoomFactor = me.zoomBox;
102 if(me.size.x > asp * me.size.y)
104 // x too large, so center x-wise
105 me.imgSize = eY + eX * (me.size.y * asp / me.size.x);
109 // y too large, so center y-wise
110 me.imgSize = eX + eY * (me.size.x / (asp * me.size.y));
118 me.zoomMax = me.zoomBox;
121 if(me.size.x > asp * me.size.y)
122 me.zoomMax = (me.size.y * asp / me.size.x) / me.imgSize.x;
124 me.zoomMax = (me.size.x / (asp * me.size.y)) / me.imgSize.y;
128 if (me.zoomMax > 0 && me.zoomFactor > me.zoomMax)
129 me.zoomFactor = me.zoomMax;
131 me.imgSize = me.imgSize * me.zoomFactor;
133 if(me.imgSize.x > 1 || me.imgSize.y > 1)
135 if(me.zoomSnapToTheBox)
138 me.zoomOffset_x = bound(0.5/me.imgSize.x, me.zoomOffset.x, 1 - 0.5/me.imgSize.x);
140 me.zoomOffset_x = bound(1 - 0.5/me.imgSize.x, me.zoomOffset.x, 0.5/me.imgSize.x);
143 me.zoomOffset_y = bound(0.5/me.imgSize.y, me.zoomOffset.y, 1 - 0.5/me.imgSize.y);
145 me.zoomOffset_y = bound(1 - 0.5/me.imgSize.y, me.zoomOffset.y, 0.5/me.imgSize.y);
149 me.zoomOffset_x = bound(0, me.zoomOffset.x, 1);
150 me.zoomOffset_y = bound(0, me.zoomOffset.y, 1);
154 me.zoomOffset = '0.5 0.5 0';
156 me.imgOrigin_x = 0.5 - me.zoomOffset.x * me.imgSize.x;
157 me.imgOrigin_y = 0.5 - me.zoomOffset.y * me.imgSize.y;
159 float Image_drag_setStartPos(entity me, vector coords)
161 //if(me.imgSize_x > 1 || me.imgSize_y > 1) // check disabled: mousewheel zoom may start from a non-zoomed-in image
163 me.start_zoomOffset = me.zoomOffset;
164 me.start_coords = coords;
168 float Image_drag(entity me, vector coords)
170 if(me.imgSize.x > 1 || me.imgSize.y > 1)
172 me.zoomOffset_x = me.start_zoomOffset.x + (me.start_coords.x - coords.x) / me.imgSize.x;
173 me.zoomOffset_y = me.start_zoomOffset.y + (me.start_coords.y - coords.y) / me.imgSize.y;
178 void Image_setZoom(entity me, float z, float atMousePosition)
180 float prev_zoomFactor;
181 prev_zoomFactor = me.zoomFactor;
182 if (z < 0) // multiply by the current zoomFactor (but can also snap to real dimensions or to box)
185 float realSize_in_the_middle, boxSize_in_the_middle;
186 realSize_in_the_middle = ((prev_zoomFactor - 1) * (me.zoomFactor - 1) < 0);
187 boxSize_in_the_middle = (me.zoomBox > 0 && (prev_zoomFactor - me.zoomBox) * (me.zoomFactor - me.zoomBox) < 0);
188 if (realSize_in_the_middle && boxSize_in_the_middle)
190 // snap to real dimensions or to box
191 if (prev_zoomFactor < me.zoomFactor)
192 me.zoomFactor = min(1, me.zoomBox);
194 me.zoomFactor = max(1, me.zoomBox);
196 else if (realSize_in_the_middle)
197 me.zoomFactor = 1; // snap to real dimensions
198 else if (boxSize_in_the_middle)
199 me.zoomFactor = me.zoomBox; // snap to box
201 else if (z == 0) // reset (no zoom)
204 me.zoomFactor = me.zoomBox;
210 me.zoomFactor = bound(1/16, me.zoomFactor, 16);
211 if (me.zoomMax > 0 && me.zoomFactor > me.zoomMax)
212 me.zoomFactor = me.zoomMax;
213 if (prev_zoomFactor != me.zoomFactor)
218 me.zoomOffset_x = me.start_zoomOffset.x + (me.start_coords.x - 0.5) / me.imgSize.x;
219 me.zoomOffset_y = me.start_zoomOffset.y + (me.start_coords.y - 0.5) / me.imgSize.y;
220 // updateAspect will reset zoomOffset to '0.5 0.5 0' if
221 // with this zoomFactor the image will not be zoomed in
222 // (updateAspect will check the new values of imgSize).
227 void Image_resizeNotify(entity me, vector relOrigin, vector relSize, vector absOrigin, vector absSize)
229 SUPER(Image).resizeNotify(me, relOrigin, relSize, absOrigin, absSize);