/*
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/*
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* Copyright (c) 2000 Greg Haerr <greg@censoft.com>
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* Copyright (c) 2000 Greg Haerr <greg@censoft.com>
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*
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*
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* Caret control for Microwindows win32 api.
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* Caret control for Microwindows win32 api.
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*
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*
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* TODO: add SetSysTimer for blinking
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* TODO: add SetSysTimer for blinking
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*/
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*/
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#include <stdio.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#include <sys/time.h>
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#ifndef __ECOS
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#ifndef __ECOS
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#include <malloc.h>
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#include <malloc.h>
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#endif
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#endif
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#include "windows.h"
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#include "windows.h"
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#include "device.h"
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#include "device.h"
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#define DEF_BLINK_TIME 500 /* default blink time in ms*/
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#define DEF_BLINK_TIME 500 /* default blink time in ms*/
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typedef struct {
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typedef struct {
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HWND hwnd; /* != NULL if caret is created*/
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HWND hwnd; /* != NULL if caret is created*/
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int x;
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int x;
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int y;
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int y;
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int nWidth;
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int nWidth;
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int nHeight;
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int nHeight;
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BOOL fShown; /* caret is currently visible*/
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BOOL fShown; /* caret is currently visible*/
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int nShowCount; /* <= 0 for hidden caret*/
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int nShowCount; /* <= 0 for hidden caret*/
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UINT nBlinkTime;
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UINT nBlinkTime;
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} CARETINFO;
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} CARETINFO;
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/* local data*/
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/* local data*/
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static CARETINFO sysCaret; /* the system caret*/
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static CARETINFO sysCaret; /* the system caret*/
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/* local procs*/
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/* local procs*/
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static void MwShowCaret(void);
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static void MwShowCaret(void);
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static void MwHideCaret(void);
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static void MwHideCaret(void);
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static void MwUpdateCaret(void);
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static void MwUpdateCaret(void);
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BOOL WINAPI
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BOOL WINAPI
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CreateCaret(HWND hwnd, HBITMAP hBitmap, int nWidth, int nHeight)
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CreateCaret(HWND hwnd, HBITMAP hBitmap, int nWidth, int nHeight)
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{
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{
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DestroyCaret(); /* destroy old caret if any*/
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DestroyCaret(); /* destroy old caret if any*/
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if (nWidth <= 0)
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if (nWidth <= 0)
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nWidth = 1;
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nWidth = 1;
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if (nHeight <= 0)
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if (nHeight <= 0)
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nHeight = 1;
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nHeight = 1;
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sysCaret.hwnd = hwnd;
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sysCaret.hwnd = hwnd;
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sysCaret.x = 0;
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sysCaret.x = 0;
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sysCaret.y = 0;
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sysCaret.y = 0;
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sysCaret.nWidth = nWidth;
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sysCaret.nWidth = nWidth;
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sysCaret.nHeight = nHeight;
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sysCaret.nHeight = nHeight;
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sysCaret.fShown = FALSE;
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sysCaret.fShown = FALSE;
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sysCaret.nShowCount = 0;
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sysCaret.nShowCount = 0;
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sysCaret.nBlinkTime = DEF_BLINK_TIME;
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sysCaret.nBlinkTime = DEF_BLINK_TIME;
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return TRUE;
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return TRUE;
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}
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}
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BOOL WINAPI
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BOOL WINAPI
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DestroyCaret(VOID)
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DestroyCaret(VOID)
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{
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{
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if (sysCaret.fShown)
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if (sysCaret.fShown)
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MwHideCaret();
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MwHideCaret();
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sysCaret.hwnd = NULL;
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sysCaret.hwnd = NULL;
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sysCaret.fShown = FALSE;
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sysCaret.fShown = FALSE;
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return TRUE;
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return TRUE;
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}
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}
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BOOL WINAPI
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BOOL WINAPI
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HideCaret(HWND hwnd)
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HideCaret(HWND hwnd)
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{
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{
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if (hwnd == NULL)
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if (hwnd == NULL)
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hwnd = sysCaret.hwnd;
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hwnd = sysCaret.hwnd;
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if (hwnd == NULL || hwnd != sysCaret.hwnd)
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if (hwnd == NULL || hwnd != sysCaret.hwnd)
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return FALSE;
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return FALSE;
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/* hide caret if this call made it invisible*/
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/* hide caret if this call made it invisible*/
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if (--sysCaret.nShowCount == 0) {
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if (--sysCaret.nShowCount == 0) {
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MwHideCaret();
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MwHideCaret();
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return TRUE;
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return TRUE;
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}
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}
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return FALSE;
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return FALSE;
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}
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}
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BOOL WINAPI
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BOOL WINAPI
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ShowCaret(HWND hwnd)
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ShowCaret(HWND hwnd)
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{
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{
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if (hwnd == NULL)
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if (hwnd == NULL)
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hwnd = sysCaret.hwnd;
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hwnd = sysCaret.hwnd;
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if (hwnd == NULL || hwnd != sysCaret.hwnd || sysCaret.nShowCount < 0)
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if (hwnd == NULL || hwnd != sysCaret.hwnd || sysCaret.nShowCount < 0)
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return FALSE;
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return FALSE;
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if (++sysCaret.nShowCount > 1)
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if (++sysCaret.nShowCount > 1)
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return TRUE;
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return TRUE;
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/* show caret, this call made it visible*/
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/* show caret, this call made it visible*/
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MwShowCaret();
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MwShowCaret();
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return TRUE;
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return TRUE;
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}
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}
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BOOL WINAPI
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BOOL WINAPI
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SetCaretPos(int nX, int nY)
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SetCaretPos(int nX, int nY)
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{
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{
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if (sysCaret.fShown && (sysCaret.x != nX || sysCaret.y != nY)) {
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if (sysCaret.fShown && (sysCaret.x != nX || sysCaret.y != nY)) {
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MwUpdateCaret(); /* toggle off*/
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MwUpdateCaret(); /* toggle off*/
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sysCaret.x = nX;
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sysCaret.x = nX;
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sysCaret.y = nY;
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sysCaret.y = nY;
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MwUpdateCaret(); /* toggle on in new location*/
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MwUpdateCaret(); /* toggle on in new location*/
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return TRUE;
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return TRUE;
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}
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}
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sysCaret.x = nX;
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sysCaret.x = nX;
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sysCaret.y = nY;
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sysCaret.y = nY;
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return TRUE;
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return TRUE;
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}
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}
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BOOL WINAPI
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BOOL WINAPI
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GetCaretPos(LPPOINT lpPoint)
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GetCaretPos(LPPOINT lpPoint)
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{
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{
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lpPoint->x = sysCaret.x;
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lpPoint->x = sysCaret.x;
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lpPoint->y = sysCaret.y;
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lpPoint->y = sysCaret.y;
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return TRUE;
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return TRUE;
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}
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}
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UINT WINAPI
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UINT WINAPI
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GetCaretBlinkTime(VOID)
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GetCaretBlinkTime(VOID)
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{
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{
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return sysCaret.nBlinkTime;
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return sysCaret.nBlinkTime;
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}
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}
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BOOL WINAPI
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BOOL WINAPI
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SetCaretBlinkTime(UINT uMSeconds)
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SetCaretBlinkTime(UINT uMSeconds)
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{
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{
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sysCaret.nBlinkTime = uMSeconds;
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sysCaret.nBlinkTime = uMSeconds;
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/* SetSysTimer */
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/* SetSysTimer */
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return TRUE;
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return TRUE;
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}
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}
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static void
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static void
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MwShowCaret(void)
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MwShowCaret(void)
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{
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{
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if (sysCaret.fShown)
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if (sysCaret.fShown)
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return;
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return;
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MwUpdateCaret();
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MwUpdateCaret();
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sysCaret.fShown = TRUE;
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sysCaret.fShown = TRUE;
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}
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}
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static void
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static void
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MwHideCaret(void)
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MwHideCaret(void)
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{
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{
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if (!sysCaret.fShown)
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if (!sysCaret.fShown)
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return;
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return;
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MwUpdateCaret();
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MwUpdateCaret();
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sysCaret.fShown = FALSE;
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sysCaret.fShown = FALSE;
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}
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}
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/* Draw the caret using XOR. Same routine is used to show and hide caret.*/
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/* Draw the caret using XOR. Same routine is used to show and hide caret.*/
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static void
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static void
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MwUpdateCaret(void)
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MwUpdateCaret(void)
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{
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{
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int oldmode;
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int oldmode;
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HDC hdc;
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HDC hdc;
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HPEN hpen;
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HPEN hpen;
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HBRUSH hbr;
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HBRUSH hbr;
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oldmode = GdSetMode(MWMODE_XOR);
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oldmode = GdSetMode(MWMODE_XOR);
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hdc = GetDC(sysCaret.hwnd);
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hdc = GetDC(sysCaret.hwnd);
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hpen = SelectObject(hdc, GetStockObject(WHITE_PEN));
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hpen = SelectObject(hdc, GetStockObject(WHITE_PEN));
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/* it seems there's some problems with Rectangle with nWidth == 1*/
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/* it seems there's some problems with Rectangle with nWidth == 1*/
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if (sysCaret.nWidth == 1) {
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if (sysCaret.nWidth == 1) {
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MoveToEx(hdc, sysCaret.x, sysCaret.y, NULL);
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MoveToEx(hdc, sysCaret.x, sysCaret.y, NULL);
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LineTo(hdc, sysCaret.x, sysCaret.y+sysCaret.nHeight);
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LineTo(hdc, sysCaret.x, sysCaret.y+sysCaret.nHeight);
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} else {
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} else {
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hbr = SelectObject(hdc, GetStockObject(WHITE_BRUSH));
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hbr = SelectObject(hdc, GetStockObject(WHITE_BRUSH));
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Rectangle(hdc, sysCaret.x, sysCaret.y,
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Rectangle(hdc, sysCaret.x, sysCaret.y,
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sysCaret.x+sysCaret.nWidth,
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sysCaret.x+sysCaret.nWidth,
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sysCaret.y+sysCaret.nHeight);
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sysCaret.y+sysCaret.nHeight);
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SelectObject(hdc, hbr);
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SelectObject(hdc, hbr);
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}
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}
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SelectObject(hdc, hpen);
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SelectObject(hdc, hpen);
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ReleaseDC(sysCaret.hwnd, hdc);
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ReleaseDC(sysCaret.hwnd, hdc);
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GdSetMode(oldmode);
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GdSetMode(oldmode);
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}
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}
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