BOOL GradientRect(HDC hdc, const LPRECT lpRect, DWORD dwColor1, DWORD dwColor2, bool bVertical) {
TRIVERTEX vertex[2];
vertex[0].x = lpRect->left;
vertex[0].y = lpRect->top;
vertex[0].Red = GetRValue(dwColor1) << 8;
vertex[0].Green = GetGValue(dwColor1) << 8;
vertex[0].Blue = GetBValue(dwColor1) << 8;
vertex[0].Alpha = 0x0000;
vertex[1].x = lpRect->right;
vertex[1].y = lpRect->bottom;
vertex[1].Red = GetRValue(dwColor2) << 8;
vertex[1].Green = GetGValue(dwColor2) << 8;
vertex[1].Blue = GetBValue(dwColor2) << 8;
vertex[1].Alpha = 0x0000;
GRADIENT_RECT gRect = {0, 1};
return GdiGradientFill(hdc, vertex, 2, &gRect, 1, static_cast<ULONG>(bVertical));
}
BOOL
MyDrawCaptionTemp(HWND hwnd, HDC hdc, const RECT *rect, HFONT hFont, HICON hIcon, LPCWSTR str, UINT uFlags, COLOR_SCHEME *scheme)
{
//ULONG Height;
//UINT VCenter, Padding;
//LONG ButtonWidth;
HBRUSH hbr;
HGDIOBJ hFontOld;
RECT rc;
//Height = scheme->Size[SIZE_CAPTION_Y] - 1;
//VCenter = (rect->bottom - rect->top) / 2;
//Padding = VCenter - (Height / 2);
//ButtonWidth = scheme->Size[SIZE_SIZE_X] - 2;
if (uFlags & DC_GRADIENT)
{
GRADIENT_RECT gcap = {0, 1};
TRIVERTEX vert[2];
COLORREF Colors[2];
Colors[0] = scheme->crColor[((uFlags & DC_ACTIVE) ?
COLOR_ACTIVECAPTION : COLOR_INACTIVECAPTION)];
Colors[1] = scheme->crColor[((uFlags & DC_ACTIVE) ?
COLOR_GRADIENTACTIVECAPTION : COLOR_GRADIENTINACTIVECAPTION)];
vert[0].x = rect->left;
vert[0].y = rect->top;
vert[0].Red = (WORD)Colors[0]<<8;
vert[0].Green = (WORD)Colors[0] & 0xFF00;
vert[0].Blue = (WORD)(Colors[0]>>8) & 0xFF00;
vert[0].Alpha = 0;
vert[1].x = rect->right;
vert[1].y = rect->bottom;
vert[1].Red = (WORD)Colors[1]<<8;
vert[1].Green = (WORD)Colors[1] & 0xFF00;
vert[1].Blue = (WORD)(Colors[1]>>8) & 0xFF00;
vert[1].Alpha = 0;
GdiGradientFill(hdc, vert, 2, &gcap, 1, GRADIENT_FILL_RECT_H);
}
void VolumeMeterData::DrawVolumeMeter(HDC hDC)
{
HDC hdcTemp = CreateCompatibleDC(hDC);
HBITMAP hbmpTemp = CreateCompatibleBitmap(hDC, cx, cy);
SelectObject(hdcTemp, hbmpTemp);
RECT clientRect = {0, 0, cx, cy};
FillRect(hdcTemp, &clientRect, (HBRUSH)COLOR_WINDOW);
int cxAdjust = cx;
const int padding = 1;
/* bound volume values */
float workingVol = max(VOL_MIN, curVolume);
workingVol = min(VOL_MAX, workingVol);
float workingMax = max(VOL_MIN, curMax);
workingMax = min(VOL_MAX, workingMax);
/* convert dB to logarithmic then to linear scale [0, 1] */
float rmsScale = (DBtoLog(workingVol) - minLinear) / (maxLinear - minLinear);
float maxScale = (DBtoLog(workingMax) - minLinear) / (maxLinear - minLinear);
LONG yStart = 0, yEnd = cy - 5;
RECT meterRMS = {0, yStart, (LONG)(cx * rmsScale), yEnd};
RECT meterGray = {0, 0, cx, yEnd};
FillRect(hdcTemp, &meterGray, hLightGray);
FillRect(hdcTemp, &meterRMS, hGreenDark);
/* gradient info setup */
TRIVERTEX vert[2] ;
GRADIENT_RECT gRect;
vert [0] .x = (LONG)(cx * rmsScale);
vert [0] .y = 0;
vert [0] .Red = 0x2000;
vert [0] .Green = 0x7d00;
vert [0] .Blue = 0x1700;
vert [0] .Alpha = 0x0000;
vert [1] .x = (LONG)(cx * maxScale);
vert [1] .y = yEnd;
vert [1] .Red = 0x3e00;
vert [1] .Green = 0xf100;
vert [1] .Blue = 0x2b00;
vert [1] .Alpha = 0x0000;
gRect.UpperLeft = 0;
gRect.LowerRight = 1;
GdiGradientFill(hdcTemp,vert,2,&gRect,1,GRADIENT_FILL_RECT_H);
/* draw 6dB graduations */
for(int i = 0; i < 16; i++)
{
float scale = graduations[i];
RECT graduation = {(LONG)(cx * scale), cy - 4, ((LONG)(cx * scale)) + 1, cy};
FillRect(hdcTemp, &graduation, hGray);
}
/* draw peak sample indicator */
float peakScale = (DBtoLog(curPeak) - minLinear) / (maxLinear - minLinear);
bool maxxed = curPeak >= 0;
if(maxxed)
peakScale = 1.0f;
RECT graduation = {(LONG)(cx * peakScale) - ((maxxed)?1:0), 0, ((LONG)(cx * peakScale)) + 1, cy};
FillRect(hdcTemp, &graduation, (maxxed)?hRed:hBlack);
BitBlt(hDC, 0, 0, cx, cy, hdcTemp, 0, 0, SRCCOPY);
DeleteObject(hdcTemp);
DeleteObject(hbmpTemp);
}
