| author | rubidium |
| Thu, 19 Jun 2008 11:45:52 +0000 | |
| changeset 11023 | 583f32658248 |
| parent 10429 | 1b99254f9607 |
| permissions | -rw-r--r-- |
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(svn r9844) -Codechange: replace zoomlevel with an enum
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/* $Id$ */ |
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/** @file zoom_func.h Functions related to zooming. */ |
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#ifndef ZOOM_FUNC_H |
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#define ZOOM_FUNC_H |
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#include "zoom_type.h" |
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extern ZoomLevel _saved_scrollpos_zoom; |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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/** |
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* Scale by zoom level, usually shift left (when zoom > ZOOM_LVL_NORMAL) |
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* When shifting right, value is rounded up |
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* @param value value to shift |
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* @param zoom zoom level to shift to |
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* @return shifted value |
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*/ |
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static inline int ScaleByZoom(int value, ZoomLevel zoom) |
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{
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(svn r9884) -Feature: 2 new zoom-out levels: 8 times and 16 times
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if (zoom == ZOOM_LVL_NORMAL) return value; |
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(svn r11656) -Codechange: add ZOOM_LVL_BEGIN and postfix operators so ZoomLevel can be used in some iterations
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int izoom = zoom - ZOOM_LVL_NORMAL; |
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return (zoom > ZOOM_LVL_NORMAL) ? value << izoom : (value + (1 << -izoom) - 1) >> -izoom; |
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} |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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/** |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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* Scale by zoom level, usually shift right (when zoom > ZOOM_LVL_NORMAL) |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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* When shifting right, value is rounded up |
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* @param value value to shift |
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* @param zoom zoom level to shift to |
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* @return shifted value |
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*/ |
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(svn r9846) -Codechange: introduced ZOOM_LVL_MIN and ZOOM_LVL_MAX for the obvious reasons
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static inline int UnScaleByZoom(int value, ZoomLevel zoom) |
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(svn r9846) -Codechange: introduced ZOOM_LVL_MIN and ZOOM_LVL_MAX for the obvious reasons
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{
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7149
ba2798e551a3
(svn r9884) -Feature: 2 new zoom-out levels: 8 times and 16 times
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if (zoom == ZOOM_LVL_NORMAL) return value; |
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8591
46eca2eb57ba
(svn r11656) -Codechange: add ZOOM_LVL_BEGIN and postfix operators so ZoomLevel can be used in some iterations
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int izoom = zoom - ZOOM_LVL_NORMAL; |
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fa2e72e31f59
(svn r10070) -Fix: fix the rounding problem of zoom-levels in zoom.hpp, so it is global for every call
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return (zoom > ZOOM_LVL_NORMAL) ? (value + (1 << izoom) - 1) >> izoom : value << -izoom; |
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(svn r9846) -Codechange: introduced ZOOM_LVL_MIN and ZOOM_LVL_MAX for the obvious reasons
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} |
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(svn r9846) -Codechange: introduced ZOOM_LVL_MIN and ZOOM_LVL_MAX for the obvious reasons
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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/** |
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* Scale by zoom level, usually shift left (when zoom > ZOOM_LVL_NORMAL) |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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* @param value value to shift |
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* @param zoom zoom level to shift to |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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* @return shifted value |
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*/ |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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static inline int ScaleByZoomLower(int value, ZoomLevel zoom) |
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{
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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if (zoom == ZOOM_LVL_NORMAL) return value; |
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8591
46eca2eb57ba
(svn r11656) -Codechange: add ZOOM_LVL_BEGIN and postfix operators so ZoomLevel can be used in some iterations
smatz
parents:
8401
diff
changeset
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int izoom = zoom - ZOOM_LVL_NORMAL; |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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return (zoom > ZOOM_LVL_NORMAL) ? value << izoom : value >> -izoom; |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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} |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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/** |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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* Scale by zoom level, usually shift right (when zoom > ZOOM_LVL_NORMAL) |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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* @param value value to shift |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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* @param zoom zoom level to shift to |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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* @return shifted value |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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*/ |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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static inline int UnScaleByZoomLower(int value, ZoomLevel zoom) |
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{
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if (zoom == ZOOM_LVL_NORMAL) return value; |
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8591
46eca2eb57ba
(svn r11656) -Codechange: add ZOOM_LVL_BEGIN and postfix operators so ZoomLevel can be used in some iterations
smatz
parents:
8401
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int izoom = zoom - ZOOM_LVL_NORMAL; |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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return (zoom > ZOOM_LVL_NORMAL) ? value >> izoom : value << -izoom; |
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(svn r11456) -Fix [FS#1412] (r10070): Viewport is bound to its top-left corner
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} |
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c2434269c3eb
(svn r11684) -Codechange: split gfx.h in a type and functional header.
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#endif /* ZOOM_FUNC_H */ |