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Diffstat (limited to 'minuitwrp/graphics.cpp')
| -rw-r--r-- | minuitwrp/graphics.cpp | 416 |
1 files changed, 416 insertions, 0 deletions
diff --git a/minuitwrp/graphics.cpp b/minuitwrp/graphics.cpp new file mode 100644 index 000000000..47325d01e --- /dev/null +++ b/minuitwrp/graphics.cpp @@ -0,0 +1,416 @@ +/* + * Copyright (C) 2007 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <stdbool.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include <fcntl.h> +#include <stdio.h> + +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sys/types.h> + +#include <linux/fb.h> +#include <linux/kd.h> + +#include <time.h> + +#include <pixelflinger/pixelflinger.h> +#include "../gui/placement.h" +#include "minui.h" +#include "graphics.h" + +struct GRFont { + GRSurface* texture; + int cwidth; + int cheight; +}; + +static GRFont* gr_font = NULL; +static minui_backend* gr_backend = NULL; + +static int overscan_percent = OVERSCAN_PERCENT; +static int overscan_offset_x = 0; +static int overscan_offset_y = 0; + +static unsigned char gr_current_r = 255; +static unsigned char gr_current_g = 255; +static unsigned char gr_current_b = 255; +static unsigned char gr_current_a = 255; +static unsigned char rgb_555[2]; +static unsigned char gr_current_r5 = 31; +static unsigned char gr_current_g5 = 63; +static unsigned char gr_current_b5 = 31; + +GRSurface* gr_draw = NULL; + +static GGLContext *gr_context = 0; +GGLSurface gr_mem_surface; +static int gr_is_curr_clr_opaque = 0; + +static bool outside(int x, int y) +{ + return x < 0 || x >= gr_draw->width || y < 0 || y >= gr_draw->height; +} + +int gr_textEx_scaleW(int x, int y, const char *s, void* pFont, int max_width, int placement, int scale) +{ + GGLContext *gl = gr_context; + void* vfont = pFont; + GRFont *font = (GRFont*) pFont; + unsigned off; + unsigned cwidth; + int y_scale = 0, measured_width, measured_height, ret, new_height; + + if (!s || strlen(s) == 0 || !font) + return 0; + + measured_height = gr_ttf_getMaxFontHeight(font); + + if (scale) { + measured_width = gr_ttf_measureEx(s, vfont); + if (measured_width > max_width) { + // Adjust font size down until the text fits + void *new_font = gr_ttf_scaleFont(vfont, max_width, measured_width); + if (!new_font) { + printf("gr_textEx_scaleW new_font is NULL\n"); + return 0; + } + measured_width = gr_ttf_measureEx(s, new_font); + // These next 2 lines adjust the y point based on the new font's height + new_height = gr_ttf_getMaxFontHeight(new_font); + y_scale = (measured_height - new_height) / 2; + vfont = new_font; + } + } else + measured_width = gr_ttf_measureEx(s, vfont); + + int x_adj = measured_width; + if (measured_width > max_width) + x_adj = max_width; + + if (placement != TOP_LEFT && placement != BOTTOM_LEFT && placement != TEXT_ONLY_RIGHT) { + if (placement == CENTER || placement == CENTER_X_ONLY) + x -= (x_adj / 2); + else + x -= x_adj; + } + + if (placement != TOP_LEFT && placement != TOP_RIGHT) { + if (placement == CENTER || placement == TEXT_ONLY_RIGHT) + y -= (measured_height / 2); + else if (placement == BOTTOM_LEFT || placement == BOTTOM_RIGHT) + y -= measured_height; + } + return gr_ttf_textExWH(gl, x, y + y_scale, s, vfont, measured_width + x, -1); +} + +void gr_clip(int x, int y, int w, int h) +{ + GGLContext *gl = gr_context; + gl->scissor(gl, x, y, w, h); + gl->enable(gl, GGL_SCISSOR_TEST); +} + +void gr_noclip() +{ + GGLContext *gl = gr_context; + gl->scissor(gl, 0, 0, gr_fb_width(), gr_fb_height()); + gl->disable(gl, GGL_SCISSOR_TEST); +} + +void gr_line(int x0, int y0, int x1, int y1, int width) +{ + GGLContext *gl = gr_context; + + if(gr_is_curr_clr_opaque) + gl->disable(gl, GGL_BLEND); + + const int coords0[2] = { x0 << 4, y0 << 4 }; + const int coords1[2] = { x1 << 4, y1 << 4 }; + gl->linex(gl, coords0, coords1, width << 4); + + if(gr_is_curr_clr_opaque) + gl->enable(gl, GGL_BLEND); +} + +gr_surface gr_render_circle(int radius, unsigned char r, unsigned char g, unsigned char b, unsigned char a) +{ + int rx, ry; + GGLSurface *surface; + const int diameter = radius*2 + 1; + const int radius_check = radius*radius + radius*0.8; + const uint32_t px = (a << 24) | (b << 16) | (g << 8) | r; + uint32_t *data; + + surface = (GGLSurface *)malloc(sizeof(GGLSurface)); + memset(surface, 0, sizeof(GGLSurface)); + + data = (uint32_t *)malloc(diameter * diameter * 4); + memset(data, 0, diameter * diameter * 4); + + surface->version = sizeof(surface); + surface->width = diameter; + surface->height = diameter; + surface->stride = diameter; + surface->data = (GGLubyte*)data; + surface->format = GGL_PIXEL_FORMAT_RGBA_8888; + + for(ry = -radius; ry <= radius; ++ry) + for(rx = -radius; rx <= radius; ++rx) + if(rx*rx+ry*ry <= radius_check) + *(data + diameter*(radius + ry) + (radius+rx)) = px; + + return (gr_surface)surface; +} + +void gr_color(unsigned char r, unsigned char g, unsigned char b, unsigned char a) +{ + GGLContext *gl = gr_context; + GGLint color[4]; +#if defined(RECOVERY_ABGR) || defined(RECOVERY_BGRA) + color[0] = ((b << 8) | r) + 1; + color[1] = ((g << 8) | g) + 1; + color[2] = ((r << 8) | b) + 1; + color[3] = ((a << 8) | a) + 1; +#else + color[0] = ((r << 8) | r) + 1; + color[1] = ((g << 8) | g) + 1; + color[2] = ((b << 8) | b) + 1; + color[3] = ((a << 8) | a) + 1; +#endif + gl->color4xv(gl, color); + + gr_is_curr_clr_opaque = (a == 255); +} + +void gr_clear() +{ + if (gr_draw->pixel_bytes == 2) { + gr_fill(0, 0, gr_fb_width(), gr_fb_height()); + return; + } + + // This code only works on 32bpp devices + if (gr_current_r == gr_current_g && gr_current_r == gr_current_b) { + memset(gr_draw->data, gr_current_r, gr_draw->height * gr_draw->row_bytes); + } else { + unsigned char* px = gr_draw->data; + for (int y = 0; y < gr_draw->height; ++y) { + for (int x = 0; x < gr_draw->width; ++x) { + *px++ = gr_current_r; + *px++ = gr_current_g; + *px++ = gr_current_b; + px++; + } + px += gr_draw->row_bytes - (gr_draw->width * gr_draw->pixel_bytes); + } + } +} + +void gr_fill(int x, int y, int w, int h) +{ + GGLContext *gl = gr_context; + + if(gr_is_curr_clr_opaque) + gl->disable(gl, GGL_BLEND); + + gl->recti(gl, x, y, x + w, y + h); + + if(gr_is_curr_clr_opaque) + gl->enable(gl, GGL_BLEND); +} + +void gr_blit(gr_surface source, int sx, int sy, int w, int h, int dx, int dy) { + if (gr_context == NULL) { + return; + } + + GGLContext *gl = gr_context; + GGLSurface *surface = (GGLSurface*)source; + + if(surface->format == GGL_PIXEL_FORMAT_RGBX_8888) + gl->disable(gl, GGL_BLEND); + + gl->bindTexture(gl, surface); + gl->texEnvi(gl, GGL_TEXTURE_ENV, GGL_TEXTURE_ENV_MODE, GGL_REPLACE); + gl->texGeni(gl, GGL_S, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE); + gl->texGeni(gl, GGL_T, GGL_TEXTURE_GEN_MODE, GGL_ONE_TO_ONE); + gl->enable(gl, GGL_TEXTURE_2D); + gl->texCoord2i(gl, sx - dx, sy - dy); + gl->recti(gl, dx, dy, dx + w, dy + h); + gl->disable(gl, GGL_TEXTURE_2D); + + if(surface->format == GGL_PIXEL_FORMAT_RGBX_8888) + gl->enable(gl, GGL_BLEND); +} + +unsigned int gr_get_width(gr_surface surface) { + if (surface == NULL) { + return 0; + } + return ((GGLSurface*) surface)->width; +} + +unsigned int gr_get_height(gr_surface surface) { + if (surface == NULL) { + return 0; + } + return ((GGLSurface*) surface)->height; +} + +void gr_flip() { + gr_draw = gr_backend->flip(gr_backend); + // On double buffered back ends, when we flip, we need to tell + // pixel flinger to draw to the other buffer + gr_mem_surface.data = (GGLubyte*)gr_draw->data; + gr_context->colorBuffer(gr_context, &gr_mem_surface); +} + +static void get_memory_surface(GGLSurface* ms) { + ms->version = sizeof(*ms); + ms->width = gr_draw->width; + ms->height = gr_draw->height; + ms->stride = gr_draw->row_bytes / gr_draw->pixel_bytes; + ms->data = (GGLubyte*)gr_draw->data; + ms->format = gr_draw->format; +} + +int gr_init(void) +{ + gr_draw = NULL; + + gr_backend = open_overlay(); + if (gr_backend) { + gr_draw = gr_backend->init(gr_backend); + if (!gr_draw) { + gr_backend->exit(gr_backend); + } else + printf("Using overlay graphics.\n"); + } + +#ifdef HAS_ADF + if (!gr_draw) { + gr_backend = open_adf(); + if (gr_backend) { + gr_draw = gr_backend->init(gr_backend); + if (!gr_draw) { + gr_backend->exit(gr_backend); + } else + printf("Using adf graphics.\n"); + } + } +#else +#ifdef MSM_BSP + printf("Skipping adf graphics because TW_TARGET_USES_QCOM_BSP := true\n"); +#else + printf("Skipping adf graphics -- not present in build tree\n"); +#endif +#endif + +#ifdef HAS_DRM + if (!gr_draw) { + gr_backend = open_drm(); + gr_draw = gr_backend->init(gr_backend); + if (gr_draw) + printf("Using drm graphics.\n"); + } +#else + printf("Skipping drm graphics -- not present in build tree\n"); +#endif + + if (!gr_draw) { + gr_backend = open_fbdev(); + gr_draw = gr_backend->init(gr_backend); + if (gr_draw == NULL) { + return -1; + } else + printf("Using fbdev graphics.\n"); + } + + overscan_offset_x = gr_draw->width * overscan_percent / 100; + overscan_offset_y = gr_draw->height * overscan_percent / 100; + + // Set up pixelflinger + get_memory_surface(&gr_mem_surface); + gglInit(&gr_context); + GGLContext *gl = gr_context; + gl->colorBuffer(gl, &gr_mem_surface); + + gl->activeTexture(gl, 0); + gl->enable(gl, GGL_BLEND); + gl->blendFunc(gl, GGL_SRC_ALPHA, GGL_ONE_MINUS_SRC_ALPHA); + + gr_flip(); + gr_flip(); + + return 0; +} + +void gr_exit(void) +{ + gr_backend->exit(gr_backend); +} + +int gr_fb_width(void) +{ + return gr_draw->width - 2*overscan_offset_x; +} + +int gr_fb_height(void) +{ + return gr_draw->height - 2*overscan_offset_y; +} + +void gr_fb_blank(bool blank) +{ + gr_backend->blank(gr_backend, blank); +} + +int gr_get_surface(gr_surface* surface) +{ + GGLSurface* ms = (GGLSurface*)malloc(sizeof(GGLSurface)); + if (!ms) return -1; + + // Allocate the data + get_memory_surface(ms); + ms->data = (GGLubyte*)malloc(ms->stride * ms->height * gr_draw->pixel_bytes); + + // Now, copy the data + memcpy(ms->data, gr_mem_surface.data, gr_draw->width * gr_draw->height * gr_draw->pixel_bytes / 8); + + *surface = (gr_surface*) ms; + return 0; +} + +int gr_free_surface(gr_surface surface) +{ + if (!surface) + return -1; + + GGLSurface* ms = (GGLSurface*) surface; + free(ms->data); + free(ms); + return 0; +} + +void gr_write_frame_to_file(int fd) +{ + write(fd, gr_mem_surface.data, gr_draw->width * gr_draw->height * gr_draw->pixel_bytes / 8); +} |