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authormarha <marha@users.sourceforge.net>2011-10-19 12:11:26 +0200
committermarha <marha@users.sourceforge.net>2011-10-19 12:11:26 +0200
commit1e90ede4237374dfbb2c8c506a906233bcfd3c5d (patch)
tree13b59b0ab2715fd0bb9eea788c73b08f3b07c01e /xorg-server/dix/inpututils.c
parentbaf98f9bb36f956245d83ecd04f90625d6d68d2b (diff)
parent9f986778bd4393c5a9108426969d45aa7f10f334 (diff)
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Merge remote-tracking branch 'origin/released'
Conflicts: xorg-server/include/os.h
Diffstat (limited to 'xorg-server/dix/inpututils.c')
-rw-r--r--xorg-server/dix/inpututils.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/xorg-server/dix/inpututils.c b/xorg-server/dix/inpututils.c
index 0a3d3d8b4..5c76361b3 100644
--- a/xorg-server/dix/inpututils.c
+++ b/xorg-server/dix/inpututils.c
@@ -37,6 +37,7 @@
#include "xkbstr.h"
#include "inpututils.h"
#include "eventstr.h"
+#include "scrnintstr.h"
/* Check if a button map change is okay with the device.
* Returns -1 for BadValue, as it collides with MappingBusy. */
@@ -619,6 +620,13 @@ void init_device_event(DeviceEvent *event, DeviceIntPtr dev, Time ms)
event->sourceid = dev->id;
}
+Bool
+point_on_screen(ScreenPtr pScreen, int x, int y)
+{
+ return x >= pScreen->x && x < pScreen->x + pScreen->width &&
+ y >= pScreen->y && y < pScreen->y + pScreen->height;
+}
+
/**
* Delete the element with the key from the list, freeing all memory
* associated with the element..
@@ -759,3 +767,66 @@ input_option_set_value(InputOption *opt, const char *value)
if (value)
opt->value = strdup(value);
}
+
+
+/* FP1616/FP3232 conversion functions.
+ * Fixed point types are encoded as signed integral and unsigned frac. So any
+ * negative number -n.m is encoded as floor(n) + (1 - 0.m).
+ */
+double
+fp1616_to_double(FP1616 in)
+{
+ double ret;
+
+ ret = (double)(in >> 16);
+ ret += (double)(in & 0xffff) * (1.0 / (1UL << 16)); /* Optimized: ldexp((double)(in & 0xffff), -16); */
+ return ret;
+}
+
+double
+fp3232_to_double(FP3232 in)
+{
+ double ret;
+ ret = (double)in.integral;
+ ret += (double)in.frac * (1.0 / (1ULL << 32)); /* Optimized: ldexp((double)in.frac, -32); */
+ return ret;
+}
+
+
+FP1616
+double_to_fp1616(double in)
+{
+ FP1616 ret;
+ int32_t integral;
+ double tmp;
+ uint32_t frac_d;
+
+ tmp = floor(in);
+ integral = (int32_t)tmp;
+
+ tmp = (in - integral) * (1UL << 16); /* Optimized: ldexp(in - integral, 16) */
+ frac_d = (uint16_t)tmp;
+
+ ret = integral << 16;
+ ret |= frac_d & 0xffff;
+ return ret;
+}
+
+FP3232
+double_to_fp3232(double in)
+{
+ FP3232 ret;
+ int32_t integral;
+ double tmp;
+ uint32_t frac_d;
+
+ tmp = floor(in);
+ integral = (int32_t)tmp;
+
+ tmp = (in - integral) * (1ULL << 32); /* Optimized: ldexp(in - integral, 32) */
+ frac_d = (uint32_t)tmp;
+
+ ret.integral = integral;
+ ret.frac = frac_d;
+ return ret;
+}