| 1 | /*
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| 2 | * Copyright (c) 2020 Jiri Svoboda
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | #include <assert.h>
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| 30 | #include <display/wndresize.h>
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| 31 | #include <stdbool.h>
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| 32 |
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| 33 | /** Get stock cursor to use for the specified window resize type.
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| 34 | *
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| 35 | * The resize type must be valid, otherwise behavior is undefined.
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| 36 | * Resize type can be validated using @c display_wndrsz_valid().
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| 37 | *
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| 38 | * @param rsztype Resize type
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| 39 | * @return Cursor to use for this resize type
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| 40 | */
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| 41 | display_stock_cursor_t display_cursor_from_wrsz(display_wnd_rsztype_t rsztype)
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| 42 | {
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| 43 | switch (rsztype) {
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| 44 | case display_wr_top:
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| 45 | case display_wr_bottom:
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| 46 | return dcurs_size_ud;
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| 47 |
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| 48 | case display_wr_left:
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| 49 | case display_wr_right:
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| 50 | return dcurs_size_lr;
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| 51 |
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| 52 | case display_wr_top_left:
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| 53 | case display_wr_bottom_right:
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| 54 | return dcurs_size_uldr;
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| 55 |
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| 56 | case display_wr_top_right:
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| 57 | case display_wr_bottom_left:
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| 58 | return dcurs_size_urdl;
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| 59 |
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| 60 | default:
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| 61 | assert(false);
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| 62 | return dcurs_arrow;
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| 63 | }
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| 64 | }
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| 65 |
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| 66 | /** Determine if resize type is valid.
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| 67 | *
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| 68 | * Determine if the resize type has one of the valid values. This function
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| 69 | * should be used when the resize type comes from an untrusted source
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| 70 | * (such as from the client).
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| 71 | *
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| 72 | * @param rsztype Resize type
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| 73 | * @return @c true iff the resize type is valid
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| 74 | */
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| 75 | bool display_wndrsz_valid(display_wnd_rsztype_t rsztype)
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| 76 | {
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| 77 | bool valid;
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| 78 |
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| 79 | valid = false;
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| 80 |
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| 81 | switch (rsztype) {
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| 82 | case display_wr_top:
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| 83 | case display_wr_bottom:
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| 84 | case display_wr_left:
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| 85 | case display_wr_right:
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| 86 | case display_wr_top_left:
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| 87 | case display_wr_bottom_right:
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| 88 | case display_wr_top_right:
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| 89 | case display_wr_bottom_left:
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| 90 | valid = true;
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| 91 | break;
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| 92 | }
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| 93 |
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| 94 | return valid;
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| 95 | }
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| 96 |
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| 97 | /** @}
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| 98 | */
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