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authorvolker <volker@3ae390bd-cb1e-0410-b409-cd5a39f66f1f>2009-01-17 17:08:12 +0000
committervolker <volker@3ae390bd-cb1e-0410-b409-cd5a39f66f1f>2009-01-17 17:08:12 +0000
commitdf239a43548d4889cd17a8bbaeee79d6fe2a37e8 (patch)
tree73692fa6ab863492a496c6d6f87dc77de248048a
parentba89cd6a199a5bd19ed811fd6a099cbe8c98b73d (diff)
downloadlcd4linux-df239a43548d4889cd17a8bbaeee79d6fe2a37e8.tar.gz
correct brightness handling, reduced round trips
git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@973 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
Diffstat (limited to '')
-rw-r--r--drv_X11.c54
1 files changed, 38 insertions, 16 deletions
diff --git a/drv_X11.c b/drv_X11.c
index e8a7aa3..92b44cc 100644
--- a/drv_X11.c
+++ b/drv_X11.c
@@ -91,7 +91,6 @@ static Window w, rw;
static Visual *vi;
static GC gc;
static Colormap cm;
-static XColor xc;
static Pixmap pm;
@@ -99,17 +98,37 @@ static Pixmap pm;
/*** hardware dependant functions ***/
/****************************************/
-static void drv_X11_color(RGBA c, int brightness)
+static XColor drv_X11_color(RGBA c, int brightness)
{
+ static XColor col[64];
+ static unsigned char alloced[64] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+ };
+ XColor xc;
+ int key;
+
xc.red = brightness * c.R;
xc.green = brightness * c.G;
xc.blue = brightness * c.B;
- xc.flags = DoRed | DoGreen | DoBlue;
- if (XAllocColor(dp, cm, &xc) == False) {
- error("%s: XAllocColor(%02x%02x%02x) failed!", Name, c.R, c.G, c.B);
+ /* 16bits per color, compressed to 6 bits (2 each color) */
+ key = (xc.red & 0xc000) >> 10 | (xc.green & 0xc000) >> 12 | (xc.blue & 0xc000) >> 14;
+ /* todo: support more than 64 colors: check if allocated color is exactly the requested */
+ if (alloced[key]) {
+ xc = col[key];
+ } else {
+ xc.flags = DoRed | DoGreen | DoBlue;
+ if (XAllocColor(dp, cm, &xc) == False) {
+ error("%s: XAllocColor(%02x%02x%02x) failed!", Name, c.R, c.G, c.B);
+ }
+ col[key] = xc;
+ alloced[key] = 1;
}
+
XSetForeground(dp, gc, xc.pixel);
+ return (xc);
}
@@ -135,6 +154,7 @@ static void drv_X11_blit(const int row, const int col, const int height, const i
static int drv_X11_brightness(int brightness)
{
static int Brightness = 255;
+ int i;
/* -1 is used to query the current brightness */
if (brightness == -1)
@@ -156,11 +176,14 @@ static int drv_X11_brightness(int brightness)
BL_COL.B = BP_COL.B * dim;
/* set new background */
- drv_X11_color(BR_COL, brightness);
- XSetWindowBackground(dp, w, xc.pixel);
+ XSetWindowBackground(dp, w, drv_X11_color(BR_COL, brightness).pixel);
/* redraw every LCD pixel */
- drv_X11_blit(0, 0, DROWS, DCOLS);
+ XClearWindow(dp, w);
+ for (i = 0; i < DROWS * DCOLS; i++) {
+ drv_X11_FB[i] = NO_COL;
+ }
+ drv_X11_blit(0, 0, LROWS, LCOLS);
/* remember new brightness */
Brightness = brightness;
@@ -319,8 +342,8 @@ static void drv_X11_timer( __attribute__ ((unused))
static int btn = 0;
if (XCheckWindowEvent(dp, w, ExposureMask | ButtonPressMask | ButtonReleaseMask, &ev) == 0
- /* there is no ClientMessageMask, so this will be checked separately */
- && XCheckTypedWindowEvent(dp, w, ClientMessage, &ev) == 0)
+ /* there is no ClientMessageMask, so this will be checked separately */
+ && XCheckTypedWindowEvent(dp, w, ClientMessage, &ev) == 0)
return;
switch (ev.type) {
@@ -375,10 +398,10 @@ static void drv_X11_timer( __attribute__ ((unused))
case ClientMessage:
if ((Atom) (ev.xclient.data.l[0]) == wmDeleteMessage) {
info("%s: Window closed by WindowManager, quit.", Name);
- if (raise(SIGTERM) != 0) {
- error("%s: Error raising SIGTERM: exit!", Name);
- exit(1);
- }
+ if (raise(SIGTERM) != 0) {
+ error("%s: Error raising SIGTERM: exit!", Name);
+ exit(1);
+ }
} else {
debug("%s: Got XClient message 0x%lx %lx %lx %lx %lx", Name, ev.xclient.data.l[0],
ev.xclient.data.l[1], ev.xclient.data.l[2], ev.xclient.data.l[3], ev.xclient.data.l[4]);
@@ -511,8 +534,7 @@ static int drv_X11_start(const char *section)
wmDeleteMessage = XInternAtom(dp, "WM_DELETE_WINDOW", False);
XSetWMProtocols(dp, w, &wmDeleteMessage, 1);
- drv_X11_color(BR_COL, 255);
- XSetWindowBackground(dp, w, xc.pixel);
+ XSetWindowBackground(dp, w, drv_X11_color(BR_COL, 255).pixel);
XClearWindow(dp, w);
/* set brightness (after first background painting) */