382 lines
12 KiB
C++
382 lines
12 KiB
C++
/********************************************************************************
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Copyright (C) 2012 Hugh Bailey <obs.jim@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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********************************************************************************/
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#include "Main.h"
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struct VolumeControlData
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{
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float curVolume;
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float lastUnmutedVol;
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DWORD drawColor;
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bool bDisabled, bHasCapture;
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long cx,cy;
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HICON hiconPlay, hiconMute;
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bool bDrawIcon;
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void DrawVolumeControl(HDC hDC);
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};
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inline VolumeControlData* GetVolumeControlData(HWND hwnd)
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{
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return (VolumeControlData*)GetWindowLongPtr(hwnd, 0);
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}
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float ToggleVolumeControlMute(HWND hwnd)
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{
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VolumeControlData *control = GetVolumeControlData(hwnd);
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if(!control)
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CrashError(TEXT("ToggleVolumeControlMute called on a control that's not a volume control"));
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if(control->curVolume < 0.05f)
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{
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if(control->lastUnmutedVol < 0.05f)
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control->lastUnmutedVol = 1.0f;
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control->curVolume = control->lastUnmutedVol;
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}
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else
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{
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control->lastUnmutedVol = control->curVolume;
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control->curVolume = 0.0f;
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}
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HDC hDC = GetDC(hwnd);
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control->DrawVolumeControl(hDC);
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ReleaseDC(hwnd, hDC);
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return control->curVolume;
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}
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float SetVolumeControlValue(HWND hwnd, float fVal)
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{
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VolumeControlData *control = GetVolumeControlData(hwnd);
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if(!control)
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CrashError(TEXT("SetVolumeControlValue called on a control that's not a volume control"));
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float lastVal = control->curVolume;
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control->curVolume = fVal;
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HDC hDC = GetDC(hwnd);
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control->DrawVolumeControl(hDC);
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ReleaseDC(hwnd, hDC);
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return lastVal;
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}
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float GetVolumeControlValue(HWND hwnd)
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{
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VolumeControlData *control = GetVolumeControlData(hwnd);
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if(!control)
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CrashError(TEXT("GetVolumeControlValue called on a control that's not a volume control"));
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return control->curVolume;
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}
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void SetVolumeControlIcons(HWND hwnd, HICON hiconPlay, HICON hiconMute)
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{
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VolumeControlData *control = GetVolumeControlData(hwnd);
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if(!control)
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CrashError(TEXT("GetVolumeControlValue called on a control that's not a volume control"));
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control->hiconPlay = hiconPlay;
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control->hiconMute = hiconMute;
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control->bDrawIcon = (control->cy == 32) && control->hiconPlay;
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HDC hDC = GetDC(hwnd);
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control->DrawVolumeControl(hDC);
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ReleaseDC(hwnd, hDC);
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}
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LRESULT CALLBACK VolumeControlProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
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{
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VolumeControlData *control;
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switch(message)
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{
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case WM_NCCREATE:
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{
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CREATESTRUCT *pCreateData = (CREATESTRUCT*)lParam;
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control = (VolumeControlData*)malloc(sizeof(VolumeControlData));
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zero(control, sizeof(VolumeControlData));
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SetWindowLongPtr(hwnd, 0, (LONG_PTR)control);
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control->curVolume = 1.0f;
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control->bDisabled = ((pCreateData->style & WS_DISABLED) != 0);
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control->cx = pCreateData->cx;
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control->cy = pCreateData->cy;
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return TRUE;
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}
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case WM_DESTROY:
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{
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control = GetVolumeControlData(hwnd);
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if(control)
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free(control);
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break;
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}
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case WM_PAINT:
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{
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control = GetVolumeControlData(hwnd);
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PAINTSTRUCT ps;
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HDC hDC = BeginPaint(hwnd, &ps);
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control->DrawVolumeControl(hDC);
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EndPaint(hwnd, &ps);
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break;
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}
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case WM_LBUTTONDOWN:
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case WM_LBUTTONUP:
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{
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control = GetVolumeControlData(hwnd);
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short x = short(LOWORD(lParam));
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short y = short(HIWORD(lParam));
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UINT id = (UINT)GetWindowLongPtr(hwnd, GWLP_ID);
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if(message == WM_LBUTTONDOWN && !control->bDisabled)
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{
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if(control->cy == 32 && x >= (control->cx-32))
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{
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if(control->curVolume < 0.05f)
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{
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if(control->lastUnmutedVol < 0.05f)
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control->lastUnmutedVol = 1.0f;
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control->curVolume = control->lastUnmutedVol;
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}
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else
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{
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control->lastUnmutedVol = control->curVolume;
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control->curVolume = 0.0f;
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}
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SendMessage(GetParent(hwnd), WM_COMMAND, MAKEWPARAM(id, VOLN_FINALVALUE), (LPARAM)hwnd);
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}
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else
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{
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SetCapture(hwnd);
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control->bHasCapture = true;
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if(control->curVolume > 0.05f)
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control->lastUnmutedVol = control->curVolume;
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int cxAdjust = control->cx;
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if(control->bDrawIcon) cxAdjust -= 32;
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control->curVolume = float(x) / cxAdjust;
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SendMessage(GetParent(hwnd), WM_COMMAND, MAKEWPARAM(id, VOLN_ADJUSTING), (LPARAM)hwnd);
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}
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HDC hDC = GetDC(hwnd);
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control->DrawVolumeControl(hDC);
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ReleaseDC(hwnd, hDC);
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}
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else if(control->bHasCapture)
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{
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UINT id = (UINT)GetWindowLongPtr(hwnd, GWLP_ID);
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SendMessage(GetParent(hwnd), WM_COMMAND, MAKEWPARAM(id, VOLN_FINALVALUE), (LPARAM)hwnd);
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ReleaseCapture();
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control->bHasCapture = false;
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}
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break;
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}
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case WM_MOUSEMOVE:
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{
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control = GetVolumeControlData(hwnd);
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if(control->bHasCapture)
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{
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int cxAdjust = control->cx;
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if(control->bDrawIcon) cxAdjust -= 32;
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control->curVolume = float(short(LOWORD(lParam))) / cxAdjust;
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if(control->curVolume < 0.0f)
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control->curVolume = 0.0f;
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else if(control->curVolume > 1.0f)
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control->curVolume = 1.0f;
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HDC hDC = GetDC(hwnd);
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control->DrawVolumeControl(hDC);
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ReleaseDC(hwnd, hDC);
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UINT id = (UINT)GetWindowLongPtr(hwnd, GWLP_ID);
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SendMessage(GetParent(hwnd), WM_COMMAND, MAKEWPARAM(id, VOLN_ADJUSTING), (LPARAM)hwnd);
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}
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break;
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}
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case WM_ENABLE:
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{
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UINT id = (UINT)GetWindowLongPtr(hwnd, GWLP_ID);
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control = GetVolumeControlData(hwnd);
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if(control->bDisabled == !wParam)
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break;
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control->bDisabled = !control->bDisabled;
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if(control->bDisabled)
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{
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if(control->curVolume > 0.05f)
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{
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control->lastUnmutedVol = control->curVolume;
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control->curVolume = 0.0f;
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SendMessage(GetParent(hwnd), WM_COMMAND, MAKEWPARAM(id, VOLN_ADJUSTING), (LPARAM)hwnd);
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}
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}
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else
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{
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if(control->curVolume < 0.05f)
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{
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control->curVolume = control->lastUnmutedVol;
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SendMessage(GetParent(hwnd), WM_COMMAND, MAKEWPARAM(id, VOLN_ADJUSTING), (LPARAM)hwnd);
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}
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}
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HDC hDC = GetDC(hwnd);
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control->DrawVolumeControl(hDC);
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ReleaseDC(hwnd, hDC);
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break;
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}
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case WM_SIZE:
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{
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control = GetVolumeControlData(hwnd);
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control->cx = LOWORD(lParam);
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control->cy = HIWORD(lParam);
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control->bDrawIcon = (control->cy == 32) && control->hiconPlay;
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HDC hDC = GetDC(hwnd);
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control->DrawVolumeControl(hDC);
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ReleaseDC(hwnd, hDC);
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break;
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}
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default:
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return DefWindowProc(hwnd, message, wParam, lParam);
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}
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return 0;
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}
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void VolumeControlData::DrawVolumeControl(HDC hDC)
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{
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HDC hdcTemp = CreateCompatibleDC(hDC);
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HBITMAP hbmpTemp = CreateCompatibleBitmap(hDC, cx, cy);
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SelectObject(hdcTemp, hbmpTemp);
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RECT clientRect = {0, 0, cx, cy};
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FillRect(hdcTemp, &clientRect, (HBRUSH)COLOR_WINDOW);
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HBRUSH hGray = CreateSolidBrush(REVERSE_COLOR(Color_Gray));
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HBRUSH hRed = CreateSolidBrush(0x2020bf);//0xff4040);
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float visualVolume = (bDisabled) ? 0.0f : curVolume;
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int cxAdjust = cx;
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if(bDrawIcon) cxAdjust -= 32;
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const int padding = 1;
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const float volSliceSize = float(cxAdjust-(padding*9))/10.0f;
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int volPixelPos = int(visualVolume*float(cxAdjust));
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if(volSliceSize > 1.0f)
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{
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float ySliceStart, ySliceSize;
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if(bDrawIcon)
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{
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ySliceStart = 4.0f;
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ySliceSize = float((cy-ySliceStart)/10);
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}
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else
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{
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ySliceStart = 0.0f;
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ySliceSize = float(cy/10);
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}
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for(int i=0; i<10; i++)
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{
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int pos = int(volSliceSize*float(i)) + (padding*i);
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RECT sliceRect = {pos, int(ySliceStart+((9.0f-float(i))*ySliceSize)), pos+int(volSliceSize), cy};
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if(sliceRect.right < volPixelPos) //full
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FillRect(hdcTemp, &sliceRect, hRed);
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else if(sliceRect.left < volPixelPos) //half
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{
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RECT leftHalf, rightHalf;
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mcpy(&leftHalf, &sliceRect, sizeof(sliceRect));
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mcpy(&rightHalf, &sliceRect, sizeof(sliceRect));
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rightHalf.left = leftHalf.right = volPixelPos;
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FillRect(hdcTemp, &leftHalf, hRed);
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FillRect(hdcTemp, &rightHalf, hGray);
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}
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else //empty
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FillRect(hdcTemp, &sliceRect, hGray);
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}
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if(bDrawIcon)
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DrawIcon(hdcTemp, cx-32, 0, (visualVolume > 0.05f) ? hiconPlay : hiconMute);
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}
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BitBlt(hDC, 0, 0, cx, cy, hdcTemp, 0, 0, SRCCOPY);
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DeleteObject(hdcTemp);
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DeleteObject(hbmpTemp);
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DeleteObject(hGray);
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DeleteObject(hRed);
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}
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void InitVolumeControl()
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{
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WNDCLASS wnd;
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wnd.cbClsExtra = 0;
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wnd.cbWndExtra = sizeof(LPVOID);
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wnd.hbrBackground = NULL;
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wnd.hCursor = LoadCursor(NULL, IDC_ARROW);
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wnd.hIcon = NULL;
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wnd.hInstance = hinstMain;
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wnd.lpfnWndProc = VolumeControlProc;
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wnd.lpszClassName = VOLUME_CONTROL_CLASS;
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wnd.lpszMenuName = NULL;
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wnd.style = CS_PARENTDC | CS_VREDRAW | CS_HREDRAW;
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if(!RegisterClass(&wnd))
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CrashError(TEXT("Could not register volume control class"));
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}
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