Attachment 64311 Details for Bug 43794 – scale to CRTC rather than screen bounds

scale to CRTC rather than screen bounds

foo.c (text/x-csrc), 2.20 KB, created by Daniel Stone on 2012-07-17 11:24:05 UTC

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Creator: Daniel Stone

Created: 2012-07-17 11:24:05 UTC

Size: 2.20 KB

patch

obsolete

>static void
>relative_to_screen(DeviceIntPtr dev, ValuatorMask *mask)
>{
>    /* find CRTC from current cursor position */
>    RRCrtcPtr crtc = which_crtc_am_i_on(dev);
>    double last_x, last_y, dx, dy; /* absolute, screen co-ord space */
>    double new_screen_x, new_screen_y; /* " " */
>    double new_device_x, new_device_y; /* absolute, device co-ord space */
>
>    last_x = rescaleValuatorAxis(dev->last.valuators[0],
>                                 dev->valuator->axes + 0,
>                                 NULL,
>                                 screenInfo.x,
>                                 screenInfo.width);
>    last_y = rescaleValuatorAxis(dev->last.valuators[1],
>                                 dev->valuator->axes + 1,
>                                 NULL,
>                                 screenInfo.y,
>                                 screenInfo.height);
>    dx = rescaleValuatorAxis(valuator_mask_get_double(mask, 0),
>                             dev->valuator->axes + 0,
>                             NULL,
>                             crtc->x,
>                             crtc->height);
>    dy = rescaleValuatorAxis(valuator_mask_get_double(mask, 1),
>                             dev->valuator->axes + 1,
>                             NULL,
>                             crtc->y,
>                             crtc->height);
>
>    /* after this the mask is now in absolute mode, i.e. no scale_to_desktop
>     * needed */
>    new_screen_x = last_x + dx;
>    new_screen_y = last_y + dy;
>    valuator_mask_set_double(mask, 0, new_screen_x);
>    valuator_mask_set_double(mask, 0, new_screen_y);
>
>    dev->last.valuators[0] = rescaleValuatorAxis(new_screen_x,
>                                                 NULL,
>                                                 dev->valuator->axes + 0,
>                                                 screenInfo.x,
>                                                 screenInfo.width);
>    dev->last.valuators[1] = rescaleValuatorAxis(new_screen_y,
>                                                 NULL,
>                                                 dev->valuator->axes + 1,
>                                                 screenInfo.y,
>                                                 screenInfo.height);
>}

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Attachments on bug 43794: 64311

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