Issue #6394: Wacom Airbrush finger wheel non-functional (on…
… Cintiq 16). Adding the patch provided by Knuckx. Note that the GTK3 variant of the patch is already merged to gtk-3-24 branch and published since GTK 3.24.28. Nevertheless since the contributor also provided a GTK2 variant, it would be a bit of a waste to let it go down the drain, wouldn't it? So let's try and use it in our GIMP 2.10.x packages for Windows.
This commit is contained in:
Jehan
@ -0,0 +1,173 @@
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From 2c09feb4aec61de9603a30bc7b17fd3a312eb762 Mon Sep 17 00:00:00 2001
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From: Knuckx <gitlab@knuckx.co.uk>
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Date: Wed, 7 Apr 2021 14:22:23 +0200
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Subject: [PATCH] =?UTF-8?q?Issue=20GIMP#6394:=20Wacom=20Airbrush=20finger?=
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=?UTF-8?q?=20wheel=20non-functional=20(on=E2=80=A6?=
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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… Cintiq 16)
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This commit is made from the patches available at:
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https://gitlab.gnome.org/GNOME/gimp/-/issues/6394#note_1041584
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Commit on the gtk-2-24 branch, with some indentation/space cleaning by
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Jehan as only modifications, to be used for GIMP 2.10.x branch.
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---
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gdk/win32/gdkinput-win32.c | 73 +++++++++++++++++++++++++++++++++++---
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gdk/win32/gdkinput-win32.h | 4 +--
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2 files changed, 71 insertions(+), 6 deletions(-)
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diff --git a/gdk/win32/gdkinput-win32.c b/gdk/win32/gdkinput-win32.c
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index 3fe7aaf3de..42f1b44151 100644
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--- a/gdk/win32/gdkinput-win32.c
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+++ b/gdk/win32/gdkinput-win32.c
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@@ -39,7 +39,7 @@
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#define WINTAB32_DLL "Wintab32.dll"
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-#define PACKETDATA (PK_CONTEXT | PK_CURSOR | PK_BUTTONS | PK_X | PK_Y | PK_NORMAL_PRESSURE | PK_ORIENTATION)
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+#define PACKETDATA (PK_CONTEXT | PK_CURSOR | PK_BUTTONS | PK_X | PK_Y | PK_NORMAL_PRESSURE | PK_ORIENTATION | PK_TANGENT_PRESSURE)
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/* We want everything in absolute mode */
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#define PACKETMODE (0)
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#include <pktdef.h>
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@@ -338,7 +338,7 @@ _gdk_input_wintab_init_check (void)
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UINT ndevices, ncursors, ncsrtypes, firstcsr, hardware;
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BOOL active;
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DWORD physid;
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- AXIS axis_x, axis_y, axis_npressure, axis_or[3];
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+ AXIS axis_x, axis_y, axis_npressure, axis_or[3], axis_tpressure;
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int i, k, n;
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int devix, cursorix;
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wchar_t devname[100], csrname[100];
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@@ -447,6 +447,7 @@ _gdk_input_wintab_init_check (void)
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(*p_WTInfoA) (WTI_DEVICES + devix, DVC_Y, &axis_y);
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(*p_WTInfoA) (WTI_DEVICES + devix, DVC_NPRESSURE, &axis_npressure);
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(*p_WTInfoA) (WTI_DEVICES + devix, DVC_ORIENTATION, axis_or);
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+ (*p_WTInfoA) (WTI_DEVICES + devix, DVC_TPRESSURE, &axis_tpressure);
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defcontext_done = FALSE;
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if (HIBYTE (specversion) > 1 || LOBYTE (specversion) >= 1)
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@@ -567,7 +568,23 @@ _gdk_input_wintab_init_check (void)
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gdkdev->pktdata &= ~PK_ORIENTATION;
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if (gdkdev->pktdata & PK_ORIENTATION)
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- gdkdev->info.num_axes += 2; /* x and y tilt */
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+ {
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+ if (gdkdev->pktdata & PK_TANGENT_PRESSURE) /* If we have a wheel, disable the twist axis */
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+ {
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+ axis_or[2].axResolution = 0;
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+ }
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+ if (axis_or[2].axResolution == 0) /* Check to see if we have a twist axis */
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+ {
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+ gdkdev->info.num_axes += 2; /* x and y tilt */
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+ }
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+ else
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+ {
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+ gdkdev->info.num_axes += 3; /* x and y tilt, rotation (twist) */
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+ }
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+ }
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+
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+ if (gdkdev->pktdata & PK_TANGENT_PRESSURE)
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+ gdkdev->info.num_axes++; /* Wacom finger wheel */
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gdkdev->info.axes = g_new (GdkDeviceAxis, gdkdev->info.num_axes);
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gdkdev->axes = g_new (GdkAxisInfo, gdkdev->info.num_axes);
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@@ -611,6 +628,7 @@ _gdk_input_wintab_init_check (void)
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gdkdev->orientation_axes[0] = axis_or[0];
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gdkdev->orientation_axes[1] = axis_or[1];
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+ gdkdev->orientation_axes[2] = axis_or[2];
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for (axis = GDK_AXIS_XTILT; axis <= GDK_AXIS_YTILT; axis++)
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{
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/* Wintab gives us aximuth and altitude, which
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@@ -624,7 +642,41 @@ _gdk_input_wintab_init_check (void)
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gdkdev->info.axes[k].max = 1.0;
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k++;
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}
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+ if (axis_or[2].axResolution != 0) /* If twist is present */
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+ {
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+ /* Wacom's Wintab driver returns the rotation
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+ * of an Art Pen as the orientation twist value.
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+ */
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+ gdkdev->axes[k].resolution = axis_or[2].axResolution / 65535.;
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+ /* These are back to front on purpose. If you put them
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+ * the "correct" way round, rotation will be flipped!
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+ */
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+ gdkdev->axes[k].min_value = axis_or[2].axMax;
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+ gdkdev->axes[k].max_value = axis_or[2].axMin;
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+ /* We're using GDK_AXIS_WHEEL as it's actually
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+ * called Wheel/Rotation to the user.
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+ */
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+ gdkdev->info.axes[k].use = GDK_AXIS_WHEEL;
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+ /* GIMP seems to expect values in the range 0-1 */
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+ gdkdev->info.axes[k].min = 0.0;
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+ gdkdev->info.axes[k].max = 1.0;
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+ k++;
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+ }
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}
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+ if (gdkdev->pktdata & PK_TANGENT_PRESSURE)
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+ {
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+ /* This is the finger wheel on a Wacom Airbrush
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+ */
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+ gdkdev->axes[k].resolution = axis_tpressure.axResolution / 65535.;
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+ gdkdev->axes[k].min_value = axis_tpressure.axMin;
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+ gdkdev->axes[k].max_value = axis_tpressure.axMax;
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+ gdkdev->info.axes[k].use = GDK_AXIS_WHEEL;
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+ /* GIMP seems to expect values in the range 0-1 */
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+ gdkdev->info.axes[k].min = 0.0; /*axis_tpressure.axMin;*/
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+ gdkdev->info.axes[k].max = 1.0; /*axis_tpressure.axMax;*/
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+ k++;
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+ }
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+
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gdkdev->info.num_keys = 0;
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gdkdev->info.keys = NULL;
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GDK_NOTE (INPUT, g_print ("device: (%d) %s axes: %d\n",
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@@ -664,6 +716,10 @@ decode_tilt (gint *axis_data,
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axis_data[0] = cos (az) * cos (el) * 1000;
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/* Y tilt */
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axis_data[1] = sin (az) * cos (el) * 1000;
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+
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+ /* Twist (Rotation) if present */
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+ if (axes[2].axResolution != 0)
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+ axis_data[2] = packet->pkOrientation.orTwist;
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}
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static void
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@@ -996,8 +1052,17 @@ _gdk_input_other_event (GdkEvent *event,
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{
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decode_tilt (gdkdev->last_axis_data + k,
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gdkdev->orientation_axes, &packet);
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- k += 2;
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+ if (gdkdev->orientation_axes[2].axResolution == 0) /* we could have 3 axes if twist is present */
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+ {
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+ k += 2;
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+ }
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+ else
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+ {
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+ k += 3;
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+ }
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}
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+ if (gdkdev->pktdata & PK_TANGENT_PRESSURE)
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+ gdkdev->last_axis_data[k++] = packet.pkTangentPressure;
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g_assert (k == gdkdev->info.num_axes);
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diff --git a/gdk/win32/gdkinput-win32.h b/gdk/win32/gdkinput-win32.h
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index 746bcaf30e..53835b27f9 100644
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--- a/gdk/win32/gdkinput-win32.h
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+++ b/gdk/win32/gdkinput-win32.h
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@@ -66,8 +66,8 @@ struct _GdkDevicePrivate
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UINT cursor;
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/* The cursor's CSR_PKTDATA */
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WTPKT pktdata;
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- /* Azimuth and altitude axis */
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- AXIS orientation_axes[2];
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+ /* Azimuth, altitude and twist axis */
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+ AXIS orientation_axes[3];
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};
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/* Addition used for extension_events mask */
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--
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2.30.2
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