| 1 |
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| 2 | /*
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| 3 | *@@sourcefile animate.c:
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| 4 | * contains a bit of helper code for animations.
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| 5 | *
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| 6 | * This is a new file with V0.81. Most of this code used to reside
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| 7 | * in common.c with previous versions.
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| 8 | * Note that with V0.9.0, the code for icon animations has been
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| 9 | * moved to the new comctl.c file.
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| 10 | *
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| 11 | * Usage: All PM programs.
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| 12 | *
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| 13 | * Function prefixes (new with V0.81):
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| 14 | * -- anm* Animation helper functions
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| 15 | *
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| 16 | * Note: Version numbering in this file relates to XWorkplace version
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| 17 | * numbering.
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| 18 | *
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| 19 | *@@header "helpers\animate.h"
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| 20 | */
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| 21 |
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| 22 | /*
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| 23 | * Copyright (C) 1997-2000 Ulrich Mller.
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| 24 | * This file is part of the "XWorkplace helpers" source package.
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| 25 | * This is free software; you can redistribute it and/or modify
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| 26 | * it under the terms of the GNU General Public License as published
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| 27 | * by the Free Software Foundation, in version 2 as it comes in the
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| 28 | * "COPYING" file of the XWorkplace main distribution.
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| 29 | * This program is distributed in the hope that it will be useful,
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| 30 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 31 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 32 | * GNU General Public License for more details.
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| 33 | */
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| 34 |
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| 35 | #define OS2EMX_PLAIN_CHAR
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| 36 | // this is needed for "os2emx.h"; if this is defined,
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| 37 | // emx will define PSZ as _signed_ char, otherwise
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| 38 | // as unsigned char
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| 39 |
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| 40 | #define INCL_DOSPROCESS
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| 41 | #define INCL_DOSDEVICES
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| 42 | #define INCL_DOSDEVIOCTL
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| 43 | #define INCL_DOSERRORS
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| 44 |
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| 45 | #define INCL_WINPOINTERS
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| 46 | #define INCL_WINSYS
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| 47 |
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| 48 | #define INCL_GPILOGCOLORTABLE
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| 49 | #define INCL_GPIPRIMITIVES
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| 50 | #define INCL_GPIBITMAPS // added UM 99-10-22; needed for EMX headers
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| 51 | #include <os2.h>
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| 52 |
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| 53 | #include <stdlib.h>
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| 54 | #include <string.h>
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| 55 |
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| 56 | #include "setup.h" // code generation and debugging options
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| 57 |
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| 58 | #include "helpers\animate.h"
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| 59 |
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| 60 | #include "helpers\datetime.h"
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| 61 | #include "helpers\winh.h"
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| 62 | #include "helpers\gpih.h"
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| 63 |
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| 64 | /*
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| 65 | *@@category: Helpers\PM helpers\Animation helpers
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| 66 | */
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| 67 |
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| 68 | /*
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| 69 | *@@ anmBlowUpBitmap:
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| 70 | * this displays an animation based on a given bitmap.
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| 71 | * The bitmap is "blown up" in that it is continually
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| 72 | * increased in size until the original size is reached.
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| 73 | * The animation is calculated so that it lasts exactly
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| 74 | * ulAnimation milliseconds, no matter how fast the
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| 75 | * system is.
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| 76 | *
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| 77 | * This function does not return until the animation
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| 78 | * has completed.
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| 79 | *
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| 80 | * You should run this routine in a thread with higher-
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| 81 | * than-normal priority, because otherwise the kernel
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| 82 | * might interrupt the thread, causing a somewhat jerky
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| 83 | * display.
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| 84 | *
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| 85 | * Returns the count of animation steps that were drawn.
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| 86 | * This is dependent on the speed of the system.
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| 87 | */
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| 88 |
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| 89 | BOOL anmBlowUpBitmap(HPS hps, // in: from WinGetScreenPS(HWND_DESKTOP)
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| 90 | HBITMAP hbm, // in: bitmap to be displayed
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| 91 | ULONG ulAnimationTime) // in: total animation time (ms)
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| 92 | {
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| 93 | ULONG ulrc = 0;
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| 94 | ULONG ulInitialTime,
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| 95 | ulNowTime;
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| 96 | // ulCurrentSize = 10;
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| 97 |
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| 98 | if (hps)
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| 99 | {
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| 100 | POINTL ptl = {0, 0};
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| 101 | RECTL rtlStretch;
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| 102 | ULONG ul,
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| 103 | ulSteps = 20;
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| 104 | BITMAPINFOHEADER bih;
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| 105 | GpiQueryBitmapParameters(hbm, &bih);
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| 106 | /* ptl.y = WinQuerySysValue(HWND_DESKTOP, SV_CYSCREEN)
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| 107 | - BMPSPACING
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| 108 | - bih.cy; */
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| 109 | ptl.x = (WinQuerySysValue(HWND_DESKTOP, SV_CXSCREEN)
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| 110 | - bih.cx) / 2;
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| 111 | ptl.y = (WinQuerySysValue(HWND_DESKTOP, SV_CYSCREEN)
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| 112 | - bih.cy) / 2;
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| 113 |
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| 114 | // we now use ul for the current animation step,
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| 115 | // which is a pointer on a scale from 1 to ulAnimationTime;
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| 116 | // ul will be recalculated after each animation
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| 117 | // step according to how much time the animation
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| 118 | // has cost on this display so far. This has the
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| 119 | // following advantages:
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| 120 | // 1) no matter how fast the system is, the animation
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| 121 | // will always last ulAnimationTime milliseconds
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| 122 | // 2) since large bitmaps take more time to calculate,
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| 123 | // the animation won't appear to slow down then
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| 124 | ulInitialTime = dtGetULongTime();
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| 125 | ul = 1;
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| 126 | ulSteps = 1000;
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| 127 | do {
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| 128 | LONG cx = (((bih.cx-20) * ul) / ulSteps) + 20;
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| 129 | LONG cy = (((bih.cy-20) * ul) / ulSteps) + 20;
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| 130 | rtlStretch.xLeft = ptl.x + ((bih.cx - cx) / 2);
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| 131 | rtlStretch.yBottom = ptl.y + ((bih.cy - cy) / 2);
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| 132 | rtlStretch.xRight = rtlStretch.xLeft + cx;
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| 133 | rtlStretch.yTop = rtlStretch.yBottom + cy;
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| 134 |
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| 135 | WinDrawBitmap(hps, hbm, NULL, (PPOINTL)&rtlStretch,
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| 136 | 0, 0, // we don't need colors
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| 137 | DBM_STRETCH);
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| 138 |
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| 139 | ulNowTime = dtGetULongTime();
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| 140 |
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| 141 | // recalculate ul: rule of three based on the
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| 142 | // time we've spent on animation so far
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| 143 | ul = (ulSteps
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| 144 | * (ulNowTime - ulInitialTime)) // time spent so far
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| 145 | / ulAnimationTime; // time to spend altogether
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| 146 |
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| 147 | ulrc++; // return count
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| 148 |
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| 149 | } while (ul < ulSteps);
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| 150 |
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| 151 | // finally, draw the 1:1 version
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| 152 | WinDrawBitmap(hps, hbm, NULL, &ptl,
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| 153 | 0, 0, // we don't need colors
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| 154 | DBM_NORMAL);
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| 155 |
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| 156 | } // end if (hps)
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| 157 |
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| 158 | return (ulrc);
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| 159 | }
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| 160 |
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| 161 | #define LAST_WIDTH 2
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| 162 | #define LAST_STEPS 50
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| 163 | #define WAIT_TIME 10
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| 164 |
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| 165 | /* ******************************************************************
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| 166 | *
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| 167 | * Other animations
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| 168 | *
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| 169 | ********************************************************************/
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| 170 |
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| 171 | /*
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| 172 | *@@ anmPowerOff:
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| 173 | * displays an animation that looks like a
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| 174 | * monitor being turned off; hps must have
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| 175 | * been acquired using WinGetScreenPS,
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| 176 | * ulSteps should be around 40-50.
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| 177 | */
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| 178 |
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| 179 | VOID anmPowerOff(HPS hps, ULONG ulSteps)
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| 180 | {
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| 181 | RECTL rclScreen, rclNow, rclLast, rclDraw;
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| 182 | ULONG ul = ulSteps;
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| 183 | ULONG ulPhase = 1;
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| 184 |
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| 185 | WinQueryWindowRect(HWND_DESKTOP, &rclScreen);
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| 186 |
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| 187 | WinShowPointer(HWND_DESKTOP, FALSE);
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| 188 |
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| 189 | memcpy(&rclLast, &rclScreen, sizeof(RECTL));
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| 190 |
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| 191 | // In order to draw the animation, we tell apart three
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| 192 | // "phases", signified by the ulPhase variable. While
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| 193 | // ulPhase != 99, we stay in a do-while loop.
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| 194 | ul = 0;
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| 195 | ulPhase = 1;
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| 196 |
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| 197 | do {
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| 198 | ULONG ulFromTime = dtGetULongTime();
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| 199 |
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| 200 | if (ulPhase == 1)
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| 201 | {
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| 202 | // Phase 1: "shrink" the screen by drawing black
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| 203 | // rectangles from the edges towards the center
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| 204 | // of the screen. With every loop, we draw the
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| 205 | // rectangles a bit closer to the center, until
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| 206 | // the center is black too. Sort of like this:
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| 207 |
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| 208 | // ***************************
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| 209 | // * black *
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| 210 | // * *
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| 211 | // * ............. *
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| 212 | // * . rclNow: . *
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| 213 | // * -> . untouched . <- *
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| 214 | // * ............. *
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| 215 | // * ^ *
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| 216 | // * ! *
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| 217 | // ***************************
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| 218 |
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| 219 | // rclNow contains the rectangle _around_ which
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| 220 | // the black rectangles are to be drawn. With
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| 221 | // every iteration, rclNow is reduced in size.
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| 222 | rclNow.xLeft = ((rclScreen.yTop / 2) * ul / ulSteps );
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| 223 | rclNow.xRight = (rclScreen.xRight) - rclNow.xLeft;
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| 224 | rclNow.yBottom = ((rclScreen.yTop / 2) * ul / ulSteps );
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| 225 | rclNow.yTop = (rclScreen.yTop) - rclNow.yBottom;
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| 226 |
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| 227 | if (rclNow.yBottom > (rclNow.yTop - LAST_WIDTH) ) {
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| 228 | rclNow.yBottom = (rclScreen.yTop / 2) - LAST_WIDTH;
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| 229 | rclNow.yTop = (rclScreen.yTop / 2) + LAST_WIDTH;
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| 230 | }
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| 231 |
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| 232 | // draw black rectangle on top of rclNow
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| 233 | rclDraw.xLeft = rclLast.xLeft;
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| 234 | rclDraw.xRight = rclLast.xRight;
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| 235 | rclDraw.yBottom = rclNow.yTop;
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| 236 | rclDraw.yTop = rclLast.yTop;
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| 237 | WinFillRect(hps, &rclDraw, CLR_BLACK);
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| 238 |
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| 239 | // draw black rectangle left of rclNow
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| 240 | rclDraw.xLeft = rclLast.xLeft;
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| 241 | rclDraw.xRight = rclNow.xLeft;
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| 242 | rclDraw.yBottom = rclLast.yBottom;
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| 243 | rclDraw.yTop = rclLast.yTop;
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| 244 | WinFillRect(hps, &rclDraw, CLR_BLACK);
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| 245 |
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| 246 | // draw black rectangle right of rclNow
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| 247 | rclDraw.xLeft = rclNow.xRight;
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| 248 | rclDraw.xRight = rclLast.xRight;
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| 249 | rclDraw.yBottom = rclLast.yBottom;
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| 250 | rclDraw.yTop = rclLast.yTop;
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| 251 | WinFillRect(hps, &rclDraw, CLR_BLACK);
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| 252 |
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| 253 | // draw black rectangle at the bottom of rclNow
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| 254 | rclDraw.xLeft = rclLast.xLeft;
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| 255 | rclDraw.xRight = rclLast.xRight;
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| 256 | rclDraw.yBottom = rclLast.yBottom;
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| 257 | rclDraw.yTop = rclNow.yBottom;
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| 258 | WinFillRect(hps, &rclDraw, CLR_BLACK);
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| 259 |
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| 260 | // remember rclNow for next iteration
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| 261 | memcpy(&rclLast, &rclNow, sizeof(RECTL));
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| 262 |
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| 263 | // done with "shrinking"?
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| 264 | if ( rclNow.xRight < ((rclScreen.xRight / 2) + LAST_WIDTH) ) {
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| 265 | ulPhase = 2; // exit
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| 266 | }
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| 267 |
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| 268 | } else if (ulPhase == 2) {
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| 269 | // Phase 2: draw a horizontal white line about
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| 270 | // where the last rclNow was. This is only
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| 271 | // executed once.
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| 272 |
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| 273 | // ***************************
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| 274 | // * black *
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| 275 | // * *
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| 276 | // * *
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| 277 | // * ----------- *
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| 278 | // * *
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| 279 | // * *
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| 280 | // * *
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| 281 | // ***************************
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| 282 |
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| 283 | rclDraw.xLeft = (rclScreen.xRight / 2) - LAST_WIDTH;
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| 284 | rclDraw.xRight = (rclScreen.xRight / 2) + LAST_WIDTH;
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| 285 | rclDraw.yBottom = (rclScreen.yTop * 1 / 4);
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| 286 | rclDraw.yTop = (rclScreen.yTop * 3 / 4);
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| 287 | WinFillRect(hps, &rclDraw, CLR_WHITE);
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| 288 |
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| 289 | ulPhase = 3;
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| 290 | ul = 0;
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| 291 |
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| 292 | } else if (ulPhase == 3) {
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| 293 | // Phase 3: make the white line shorter with
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| 294 | // every iteration by drawing black rectangles
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| 295 | // above it. These are drawn closer to the
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| 296 | // center with each iteration.
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| 297 |
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| 298 | // ***************************
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| 299 | // * black *
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| 300 | // * *
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| 301 | // * *
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| 302 | // * -> ---- <- *
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| 303 | // * *
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| 304 | // * *
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| 305 | // * *
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| 306 | // ***************************
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| 307 |
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| 308 | rclDraw.xLeft = (rclScreen.xRight / 2) - LAST_WIDTH;
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| 309 | rclDraw.xRight = (rclScreen.xRight / 2) + LAST_WIDTH;
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| 310 | rclDraw.yTop = (rclScreen.yTop * 3 / 4);
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| 311 | rclDraw.yBottom = (rclScreen.yTop * 3 / 4) - ((rclScreen.yTop * 1 / 4) * ul / LAST_STEPS);
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| 312 | if (rclDraw.yBottom < ((rclScreen.yTop / 2) + LAST_WIDTH))
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| 313 | rclDraw.yBottom = ((rclScreen.yTop / 2) + LAST_WIDTH);
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| 314 | WinFillRect(hps, &rclDraw, CLR_BLACK);
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| 315 |
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| 316 | rclDraw.xLeft = (rclScreen.xRight / 2) - LAST_WIDTH;
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| 317 | rclDraw.xRight = (rclScreen.xRight / 2) + LAST_WIDTH;
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| 318 | rclDraw.yBottom = (rclScreen.yTop * 1 / 4);
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| 319 | rclDraw.yTop = (rclScreen.yTop * 1 / 4) + ((rclScreen.yTop * 1 / 4) * ul / LAST_STEPS);
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| 320 | if (rclDraw.yTop > ((rclScreen.yTop / 2) - LAST_WIDTH))
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| 321 | rclDraw.yBottom = ((rclScreen.yTop / 2) - LAST_WIDTH);
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| 322 |
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| 323 | WinFillRect(hps, &rclDraw, CLR_BLACK);
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| 324 |
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| 325 | ul++;
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| 326 | if (ul > LAST_STEPS) {
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| 327 | ulPhase = 99;
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| 328 | }
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| 329 | }
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| 330 |
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| 331 | ul++;
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| 332 |
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| 333 | while (dtGetULongTime() < ulFromTime + WAIT_TIME) {
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| 334 | // PSZ p = NULL; // keep compiler happy
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| 335 | }
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| 336 | } while (ulPhase != 99);
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| 337 |
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| 338 | // sleep a while
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| 339 | DosSleep(500);
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| 340 | WinFillRect(hps, &rclScreen, CLR_BLACK);
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| 341 | DosSleep(500);
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| 342 |
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| 343 | WinShowPointer(HWND_DESKTOP, TRUE);
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| 344 | }
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| 345 |
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| 346 |
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| 347 |
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