| 885 | |
| 886 | |
| 887 | void |
| 888 | vesa_userpan(enum vga_pan_direction pan) |
| 889 | { |
| 890 | /* pline("Into userpan"); */ |
| 891 | if (iflags.over_view || iflags.traditional_view) |
| 892 | return; |
| 893 | |
| 894 | switch (pan) { |
| 895 | case pan_left: |
| 896 | if (viewport_cols < COLNO) { |
| 897 | clipxmax = clipx - 1; |
| 898 | clipx = clipxmax - (viewport_cols - 1); |
| 899 | if (clipx < 0) { |
| 900 | clipx = 0; |
| 901 | clipxmax = viewport_cols - 1; |
| 902 | } |
| 903 | } |
| 904 | break; |
| 905 | |
| 906 | case pan_right: |
| 907 | if (viewport_cols < COLNO) { |
| 908 | clipx = clipxmax + 1; |
| 909 | clipxmax = clipx + (viewport_cols - 1); |
| 910 | if (clipxmax > COLNO - 1) { |
| 911 | clipxmax = COLNO - 1; |
| 912 | clipx = clipxmax - (viewport_cols - 1); |
| 913 | } |
| 914 | } |
| 915 | break; |
| 916 | |
| 917 | case pan_up: |
| 918 | if (viewport_rows < ROWNO) { |
| 919 | clipymax = clipy - 1; |
| 920 | clipy = clipymax - (viewport_rows - 1); |
| 921 | if (clipy < 0) { |
| 922 | clipy = 0; |
| 923 | clipymax = viewport_rows - 1; |
| 924 | } |
| 925 | } |
| 926 | break; |
| 927 | |
| 928 | case pan_down: |
| 929 | if (viewport_rows < ROWNO) { |
| 930 | clipy = clipymax + 1; |
| 931 | clipymax = clipy + (viewport_rows - 1); |
| 932 | if (clipymax > ROWNO - 1) { |
| 933 | clipymax = ROWNO - 1; |
| 934 | clipy = clipymax - (viewport_rows - 1); |
| 935 | } |
| 936 | } |
| 937 | break; |
| 938 | } |
| 939 | |
| 940 | vesa_refresh(); |
| 941 | } |
| 942 | |
| 943 | void |
| 944 | vesa_overview(boolean on) |
no test coverage detected