d710e96d81
In GimpDisplayShell, scale the render cache by the window's scale factor, and render its content in device pixels, instead of scaled application pixels. When painting the cache to the screen, unscale the cairo context by the same factor, so that it's painted in the native resolution. Note that the various gimp_display_shell_render_foo() functions still speak in application pixels, and the scaling happens internally in gimp_display_shell_render(). Aside from rendering at native resolution on HiDPI, this also fixes an issue where grid-like display artifacts would appear when the render cache was not fully validated due to the non-native scaling.
54 lines
2.7 KiB
C
54 lines
2.7 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef __GIMP_DISPLAY_SHELL_RENDER_H__
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#define __GIMP_DISPLAY_SHELL_RENDER_H__
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void gimp_display_shell_render_set_scale (GimpDisplayShell *shell,
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gint scale);
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void gimp_display_shell_render_invalidate_full (GimpDisplayShell *shell);
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void gimp_display_shell_render_invalidate_area (GimpDisplayShell *shell,
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gint x,
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gint y,
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gint width,
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gint height);
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void gimp_display_shell_render_validate_area (GimpDisplayShell *shell,
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gint x,
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gint y,
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gint width,
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gint height);
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gboolean gimp_display_shell_render_is_valid (GimpDisplayShell *shell,
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gint x,
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gint y,
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gint width,
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gint height);
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void gimp_display_shell_render (GimpDisplayShell *shell,
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cairo_t *cr,
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gint x,
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gint y,
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gint width,
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gint height,
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gdouble scale);
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#endif /* __GIMP_DISPLAY_SHELL_RENDER_H__ */
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