174 lines
5.1 KiB
C
174 lines
5.1 KiB
C
/*-----------------------------------------------------------------------------+
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| TRACK.C |
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| Contains the code which implements the track bar |
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| (C) Copyright Microsoft Corporation 1991. All rights reserved. |
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| Revision History |
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| Oct-1992 MikeTri Ported to WIN32 / WIN16 common code |
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+-----------------------------------------------------------------------------*/
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#include <windows.h>
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#include <mmsystem.h>
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#include <windowsx.h>
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#include "mplayer.h"
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#include "toolbar.h"
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#include "tracki.h"
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WNDPROC fnTrackbarWndProc = NULL;
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/* TB_OnKey
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*
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* Handles WM_KEYDOWN and WM_KEYUP messages.
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*
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* If the shift key is pressed while we're playing or scrolling
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* treat it as a start selection. End the selection on the key-up
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* message.
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*
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* Clear any selection if the escape key is pressed.
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*
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*/
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void TB_OnKey(HWND hwnd, UINT vk, BOOL fDown, int cRepeat, UINT flags)
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{
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int cmd = -1;
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switch(vk)
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{
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case VK_SHIFT:
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/* Check that the key wasn't already down:
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*/
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if (fDown && !(flags & 0x4000))
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{
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if(((gwStatus == MCI_MODE_PLAY) || gfScrollTrack)
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&&(toolbarStateFromButton(ghwndMark, BTN_MARKIN, TBINDEX_MARK)
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!= BTNST_GRAYED))
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SendMessage(hwnd, WM_COMMAND, IDT_MARKIN, 0);
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}
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/* If !fDown, it must be fUp:
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*/
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else if (!fDown)
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{
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if (SendMessage(ghwndTrackbar, TBM_GETSELSTART, 0, 0) != -1)
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SendMessage(hwnd, WM_COMMAND, IDT_MARKOUT, 0);
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}
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break;
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case VK_ESCAPE:
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SendMessage(ghwndTrackbar, TBM_CLEARSEL, (WPARAM)TRUE, 0);
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break;
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default:
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if (fDown)
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{
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// Don't do this, because the common-control trackbar sends us
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// WM_HSCROLL in response to this, which causes us to increment twice:
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// FORWARD_WM_KEYDOWN(hwnd, vk, cRepeat, flags, fnTrackbarWndProc);
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switch (vk)
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{
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case VK_HOME:
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cmd = TB_TOP;
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break;
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case VK_END:
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cmd = TB_BOTTOM;
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break;
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case VK_PRIOR:
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cmd = TB_PAGEUP;
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break;
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case VK_NEXT:
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cmd = TB_PAGEDOWN;
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break;
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case VK_LEFT:
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case VK_UP:
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cmd = TB_LINEUP;
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break;
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case VK_RIGHT:
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case VK_DOWN:
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cmd = TB_LINEDOWN;
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break;
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default:
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break;
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}
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}
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else
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{
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FORWARD_WM_KEYUP(hwnd, vk, cRepeat, flags, fnTrackbarWndProc);
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return;
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}
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if (cmd != -1)
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SendMessage(GetParent(hwnd), WM_HSCROLL, MAKELONG(cmd, 0), (LPARAM)hwnd);
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}
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}
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/* Subclass the window so that we can handle the key presses
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* we're interested in.
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*/
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/* TBWndProc() */
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LONG_PTR FAR PASCAL
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SubClassedTrackbarWndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
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{
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switch (message)
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{
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HANDLE_MSG(hwnd, WM_KEYDOWN, TB_OnKey);
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HANDLE_MSG(hwnd, WM_KEYUP, TB_OnKey);
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/* HACK ALERT
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*
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* This is to get around a bug in the Chicago common control trackbar,
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* which is sending too many TB_ENDTRACK notifications.
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* It sends one when it receives WM_CAPTURECHANGED, even if it called
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* ReleaseCapture itself.
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* So, if we're not currently scrolling, ignore it.
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*/
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case WM_CAPTURECHANGED:
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if (!gfScrollTrack)
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return 0;
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case TBM_SHOWTICS:
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/* If we're hiding the ticks, we want a chiseled thumb,
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* so make it TBS_BOTH as well as TBS_NOTICKS.
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*/
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if (wParam == TRUE)
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SetWindowLongPtr(hwnd, GWL_STYLE,
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(GetWindowLongPtr(hwnd, GWL_STYLE) & ~(TBS_NOTICKS | TBS_BOTH)));
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else
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SetWindowLongPtr(hwnd, GWL_STYLE,
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(GetWindowLongPtr(hwnd, GWL_STYLE) | TBS_NOTICKS | TBS_BOTH));
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if (lParam == TRUE)
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InvalidateRect(hwnd, NULL, TRUE);
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return 0;
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}
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return CallWindowProc(fnTrackbarWndProc, hwnd, message, wParam, lParam);
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}
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void SubClassTrackbarWindow()
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{
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if (!fnTrackbarWndProc)
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fnTrackbarWndProc = (WNDPROC)GetWindowLongPtr(ghwndTrackbar, GWLP_WNDPROC);
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if (ghwndTrackbar)
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SetWindowLongPtr(ghwndTrackbar, GWLP_WNDPROC, (LONG_PTR)SubClassedTrackbarWndProc);
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}
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