TheGood
Joined: 30 Jul 2007
Posts: 580
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 Posted: Tue Mar 24, 2009 3:49 am Post subject: Example: A volume OSD using GDI+ |
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This script is just an example of how to draw a volume OSD onto a GUI using GDI+. It requires tic's excellent GDI+ library. The function itself is heavily based on Tutorial 9 of tic's tutorials. The script monitors changes in Master, Wave and (if existent) Winamp volume. Any changes bring up a GUI in the middle of the screen notifying of the volume's new value.
Obviously, you can change it to your needs (position of the GUI, one GUI for all the volumes, etc...)
| Code: | /*! TheGood
VolumeOSD - A volume OSD using GDI+
*/
;This script requires tic's amazing GDI+ wrapper which can be found at:
;http://www.autohotkey.com/forum/viewtopic.php?t=32238
;Needed for SendMessage to work properly
DetectHiddenWindows, On
;You first need to start up GDI+
pToken := Gdip_Startup()
;Check for error
If Not pToken {
MsgBox, 16, VolumeOSD, % "GDI+ failed to start. Please ensure you have GDI+ on your system." ;%
. "`nThe program will now exit."
ExitApp
}
;So that we can shutdown GDI+ nicely
OnExit, ExitingApp
;Create a layered window
Gui, 1:-Caption +E0x80000 +LastFound +AlwaysOnTop +ToolWindow
hGui1 := WinExist()
Gui, 2:-Caption +E0x80000 +LastFound +AlwaysOnTop +ToolWindow
hGui2 := WinExist()
Gui, 3:-Caption +E0x80000 +LastFound +AlwaysOnTop +ToolWindow
hGui3 := WinExist()
;Get the current data so that it won't automatically show on startup
SoundGet, iOldMaster, Master, Volume
SoundGet, bOldMaster, Master, Mute
SoundGet, iOldWave, Wave, Volume
SoundGet, bOldWave, Wave, Mute
;Check if Winamp exists
hWinamp := WinExist("ahk_class Winamp v1.x")
If hWinamp {
SendMessage 0x400, -666, 122,, ahk_id %hWinamp%
iOldWinamp := (ErrorLevel / 255) * 100
}
;Main loop
Loop {
;Get master volume and update OSD
SoundGet, iMaster, Master, Volume
SoundGet, bMaster, Master, Mute
;Check for changes
If (iMaster <> iOldMaster) Or (bOldMaster <> bMaster) {
VolumeOSD(hGui1, (A_ScreenWidth - 200) / 2, (A_ScreenHeight - 170) / 2, "Master Volume", iMaster
, Round(iMaster) "%", 0xFFCCCCCC, (bMaster = "OFF") ? 0xFF0F0FFF : 0xFFFF0000, 0xFF000000, 0xFFFFFFFF)
iLastMaster := A_TickCount
}
iOldMaster := iMaster
bOldMaster := bMaster
;Get wave volume and update OSD
SoundGet, iWave, Wave, Volume
SoundGet, bWave, Wave, Mute
;Check for changes
If (iWave <> iOldWave) Or (bOldWave <> bWave) {
VolumeOSD(hGui2, (A_ScreenWidth - 200) / 2, ((A_ScreenHeight - 170) / 2) + 60, "Wave Volume", iWave
, Round(iWave) "%", 0xFFCCCCCC, (bWave = "OFF") ? 0xFF0F0FFF : 0xFFFF0000, 0xFF000000, 0xFFFFFFFF)
iLastWave := A_TickCount
}
iOldWave := iWave
bOldWave := bWave
If hWinamp {
;Get Winamp volume and update OSD
SendMessage 0x400, -666, 122,, ahk_id %hWinamp%
iWinamp := (ErrorLevel / 255) * 100
;Check for changes
If (iWinamp <> iOldWinamp) {
VolumeOSD(hGui3, (A_ScreenWidth - 200) / 2, ((A_ScreenHeight - 170) / 2) + 120, "Winamp Volume", iWinamp
, Round(iWinamp) "%", 0xFFCCCCCC, 0xFF0F0FFF, 0xFF000000, 0xFFFFFFFF)
iLastWinamp := A_TickCount
}
iOldWinamp := iWinamp
}
;Check if we can leave
If (A_TickCount - iLastMaster > 1000)
Gui, 1:Hide
If (A_TickCount - iLastWave > 1000)
Gui, 2:Hide
If (A_TickCount - iLastWinamp > 1000)
Gui, 3:Hide
;Get some sleep
Sleep, 50
}
;hwnd - Handle of the GUI
;iX - X coordinate of the GUI
;iY - Y coordinate of the GUI
;sText - Text to display
;iProgress - Percentage value of the progress bar (eg. 50) - can have decimals
;sProgText - Text to display on top of the progress bar
;cText - Forecolor of sText in ARGB
;cProgFill - Color of the progress bar in ARGB
;cProgShape - Color of the outline of the progress bar in ARGB
;cPercent - Forecolor of sProgText in ARGB
VolumeOSD(hwnd, iX, iY, sText, iProgress, sProgText, cText, cProgFill, cProgShape, cPercent) {
iW := 200, iH := 50
;Create a GDI bitmap
hbm := CreateDIBSection(iW, iH)
;Get a device context compatible with the screen
hdc := CreateCompatibleDC()
;Select the bitmap into the device context
obm := SelectObject(hdc, hbm)
;Get a pointer to the graphics of the bitmap, for use with drawing functions
G := Gdip_GraphicsFromHDC(hdc)
;Set the smoothing mode to antialias = 4 to make shapes appear smother
Gdip_SetSmoothingMode(G, 4)
;Create a partially transparent to draw a rounded rectangle with
pBrush := Gdip_BrushCreateSolid(0xCC000000)
;Fill the graphics of the bitmap with a rounded rectangle using the brush created
Gdip_FillRoundedRectangle(G, pBrush, 0, 0, iW, iH, 10)
;Delete the brush as it is no longer needed and wastes memory
Gdip_DeleteBrush(pBrush)
;Fix cText and cPercent so that they become option compatible with Gdip_TextToGraphic()
cText := "c" SubStr(cText, 3), cPercent := "c" SubStr(cPercent, 3)
;Draw the main text at (6, 6) in specified color with AA at size 16
Options = x6 y6 %cText% r4 s16
Gdip_TextToGraphics(G, sText, Options, "Arial")
;It's now time to fill the shape. Prepare a brush
pBrush := Gdip_BrushCreateSolid(cProgFill)
;Fill the shape
Gdip_FillRoundedRectangle(G, pBrush, 8, 28, (iProgress / 100) * (iW - 16), 15, (iProgress >= 2) ? 2 : 0)
;We're done with the brush now
Gdip_DeleteBrush(pBrush)
;Create a pen for the outline of the progress bar
pBorderPen := Gdip_CreatePen(cProgShape, 1)
;We can now draw the outline
Gdip_DrawRoundedRectangle(G, pBorderPen, 8, 28, iW - 16, 15, 2)
;We're done with the pen now
Gdip_DeletePen(pBorderPen)
;Draw the progress bar text over the progress bar in specified color with AA at size 10
Options := "x8 y29 h14 w" (iW - 16) " " cPercent " r4 s12 Center Bold"
Gdip_TextToGraphics(G, sProgText, Options, "Arial")
;Update the specified window we have created with a handle to our bitmap
UpdateLayeredWindow(hwnd, hdc, iX, iY, iW, iH)
; Select the object back into the hdc
SelectObject(hdc, obm)
; Now the bitmap may be deleted
DeleteObject(hbm)
; Also the device context related to the bitmap may be deleted
DeleteDC(hdc)
; The graphics may now be deleted
Gdip_DeleteGraphics(G)
;Show the GUI if it's not showing already
If Not DllCall("IsWindowVisible", "UInt", hwnd)
DllCall("ShowWindow", "UInt", hwnd, "UInt", 8) ;SW_SHOWNA
Return
}
;Shutdown GDI+ and get out
ExitingApp:
Gdip_Shutdown(pToken)
ExitApp
Return |
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