Cliff Zhao
4156a850ef
plymouth-screen-twice-scale-on-160DPI-higher.patch: When screen DPI > 160, display will scale output twice (boo#1183425 boo#1184309). OBS-URL: https://build.opensuse.org/request/show/977039 OBS-URL: https://build.opensuse.org/package/show/Base:System/plymouth?expand=0&rev=320
54 lines
2.2 KiB
Diff
54 lines
2.2 KiB
Diff
diff -Nura plymouth-0.9.5~git20220412.e960111/src/libply/ply-utils.c plymouth-0.9.5~git20220412.e960111_new/src/libply/ply-utils.c
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--- plymouth-0.9.5~git20220412.e960111/src/libply/ply-utils.c 2022-04-15 16:39:24.000000000 +0800
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+++ plymouth-0.9.5~git20220412.e960111_new/src/libply/ply-utils.c 2022-05-13 18:34:30.249211696 +0800
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@@ -861,7 +861,7 @@
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}
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/* The minimum resolution at which we turn on a device-scale of 2 */
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-#define HIDPI_LIMIT 192
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+#define HIDPI_TWICE_LIMIT 160
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#define HIDPI_MIN_HEIGHT 1200
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int
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@@ -873,8 +873,20 @@
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int device_scale;
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double dpi_x, dpi_y;
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const char *force_device_scale;
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-
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device_scale = 1;
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+ #define WIDTH_INCHS (width_mm / 25.4)
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+ #define HEIGHT_INCHS (height_mm / 25.4)
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+
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+ if (width > 0 && height > 0 && width_mm > 0 && height_mm > 0) {
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+ ply_trace("screen width is %d mm", width_mm);
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+ ply_trace("screen height is %d mm", height_mm);
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+ ply_trace("screen width pixels is %d.", width);
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+ ply_trace("screen height pixels is %d.", height);
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+ dpi_x = (double)width / WIDTH_INCHS;
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+ ply_trace("screen width DPI is %lf", dpi_x);
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+ dpi_y = (double)height / HEIGHT_INCHS;
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+ ply_trace("screen height DPI is %lf", dpi_y);
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+ }
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if ((force_device_scale = getenv ("PLYMOUTH_FORCE_SCALE")))
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return strtoul (force_device_scale, NULL, 0);
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@@ -893,14 +905,10 @@
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(width_mm == 16 && height_mm == 10))
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return 1;
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- if (width_mm > 0 && height_mm > 0) {
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- dpi_x = (double)width / (width_mm / 25.4);
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- dpi_y = (double)height / (height_mm / 25.4);
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- /* We don't completely trust these values so both
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- must be high, and never pick higher ratio than
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- 2 automatically */
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- if (dpi_x > HIDPI_LIMIT && dpi_y > HIDPI_LIMIT)
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- device_scale = 2;
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+ if (dpi_x > HIDPI_TWICE_LIMIT && dpi_y > HIDPI_TWICE_LIMIT)
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+ {
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+ device_scale = 2;
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+ ply_trace("When DPI > 160, screen will scale output twice as community want.");
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}
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return device_scale;
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